:wa:
Unfortunately I only found this question being asked in Arabic and there were no English translation available in Islamqa.com. So I will try to translate the main idea (the underlined texts) so you will get it inshaAllah:
إذا لم ينطق بالشهادة عند الموت فهل يدل على سوء خاتمته؟
المسلم الذي يصلي ويصوم ويعرف شرع الله ويشهد أن الله هو الواحد الأحد وأن محمدا عبده ورسوله ويحرم ما حرم الله ولكن أصيب بمرض أطرحه الفراش مدة سنتين أو أكثر ومازال يصلي ويؤمن بالله ولا يشرك به شيئا وعند الاحتضار لم يقل : لا إله إلا الله لأنه في غيبوبة ومات ولم ينطق بالشهادتين ، فهل مات على غير الإسلام ؟ لكنه أخلاقه طيبة ، وهو يصلي ويحب الله ورسوله ، ومرض مرضا شديدا ولم يترك الصلاة ، فهل الذي يموت ولم ينطق بالشهادتين وهو يحب الله ورسوله فهل مات على غير الإسلام ؟
الحمد لله
المسلم الذي يشهد ألا إله إلا الله وأن محمدا رسول ويصلي ويصوم لا يجوز أن يحكم عليه بالكفر أو بسوء الخاتمة لكونه لم ينطق بالشهادتين عند الموت ، سواء ترك النطق لغيبوبة أو لغير ذلك ، بل لا يحكم على أحد بالكفر إلا إذا أتى ناقضاً من نواقض الإسلام ، كَسَبِّ الله تعالى أو رسوله صلى الله عليه وسلم أو الاستهزاء بدينه أو إهانة المصحف أو غير ذلك من النواقض التي دل الدليل الشرعي على أنها كفر أو شرك مخرج من الملة ، وتحققت مع ذلك شروط التكفير وانتفت موانعه .
وأما النطق بلا إله إلا الله عند الموت فهو من علامات حسن الخاتمة ؛ لما روى أبو داود (3116) عَنْ مُعَاذِ بْنِ جَبَلٍ رضي الله عنه قَالَ : قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : ( مَنْ كَانَ آخِرُ كَلَامِهِ لَا إِلَهَ إِلَّا اللَّهُ دَخَلَ الْجَنَّةَ ) وصححه الألباني في صحيح أبي داود .
فإذا لم ينطق بذلك ، فلا يدل هذا على أنه غير مسلم ، بل ولا يدل على سوء خاتمته ، لا سيما إذا تركها لدخوله في حالة الإغماء أو الغيبوبة .
فهذا الحديث إنما ذكر سبباً واحداً لدخول الجنة ، وعلامة واحدة من علامات حسن الخاتمة ، وهو "أن يكون آخر كلامه لا إله إلا الله" .
فلا يفهم من الحديث أن من لم يكن آخر كلامه لا إله إلا الله لم يدخل الجنة ، لأنه قد يدخل الجنة بأسباب أخرى .
فهو كإخبار الرسول صلى الله عليه وسلم بأن الشهيد تغفر له ذنوبه كلها ، فإن ذلك لا يعني أن من لم يكن شهيداً فإنه لا يغفر له ، فقد يغفر له بسبب آخر من أسباب المغفرة ، وهي كثيرة .
فكذلك من كان آخر كلامه لا إله إلا الله دخل الجنة ، فإن لم يقلها ، فقد يدخل الجنة بأسباب أخرى .
وما دام هذا الرجل المسؤول عنه كان محافظاً على الصلاة ولم يترك الصلاة حتى توفاه الله ، مع ما ذكر في السؤال من أعماله الصالحة فإننا نرجو أن يكون الله تعالى قد تلقاه بمغفرته ورحمته وأسكنه فسيح جناته .
وينظر علامات حسن الخاتمة في جواب السؤال رقم (10903) .
والله أعلم .
Source:http://www.islamqa.com/ar/ref/114666
The questioner was asking if the Muslim died without saying the shahadatain before he died (for any reason like being unconscious) will that be a sign for a bad ending for him?
The answer:
Its
one sign of the good ending, but if the Muslim was not able to say it for any reason like being unconscious or something then that is not a sign that he wont enter the Jannah.
So in general, saying the shahadah is one of many signs that the person has a good ending and he is gonna enter the paradise.
....................................................
The other signs for the good ending are many, read this
:The way to a good end
Are there any signs that indicate that a person’s life ended well?.
Praise be to Allaah. Firstly: a good end…
A good end means when a person was guided before his death to keep away from that which angers the Lord and to repent from sin, and to focus on doing acts of worship and good deeds, and then he died in this good state. One of the indications of this is the saheeh hadeeth narrated from Anas ibn Maalik (may Allaah be pleased with him) who said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “When Allaah wills good for His slave, He uses him.” They said, “How does He use him?” He said, “He guides him to do good deeds before he dies.” Narrated by Imam Ahmad, 11625; al-Tirmidhi, 2142; classed as saheeh by al-Albaani in al-Silsilah al-Saheehah, 1334.
The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “When Allaah wills good for His slave, He sweetens him.” He was asked, “What is this sweetening?” He said, “Allaah guides him to do righteous deeds before he dies, then He takes (his soul) whilst he is in that state.” Narrated by Ahmad, 17330; classed as saheeh by al-Albaani in al-Silsilah al-Saheehah, 1114.
There are signs of a good end, some of which are seen by the dying person as he is dying, and some which may be visible to other people.
Secondly:
With regard to the signs of a good end that appear to the dying person, these are things that give him the glad tidings, as he is dying, that Allaah is pleased with him. As Allaah says (interpretation of the meaning):
“Verily, those who say: ‘Our Lord is Allaah (Alone),’ and then they stand firm, on them the angels will descend (at the time of their death) (saying): ‘Fear not, nor grieve! But receive the glad tidings of Paradise which you have been promised!’”
[Fussilat 41:30]
These glad tidings come to the believers when they are dying. See Tafseer Ibn Sa’di, 1256.
This is also indicated by the hadeeth narrated by al-Bukhaari, 6507; Muslim, 2683 from the Mother of the Believers ‘Aa’ishah (may Allaah be pleased with her) who said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “Whoever loves to meet Allaah, Allaah loves to meet him, and whoever hates to meet Allaah, Allaah hates to meet him.” I said, “O Prophet of Allaah, do you mean hating death, for all of us hate death?” He said, “It is not like that; but when the believer is given the glad tidings of the mercy and pleasure of Allaah, and His Paradise, he loves to meet Allaah, And when the kaafir is given the tidings of the wrath and punishment of Allaah, he hates to meet Allaah and Allaah hates to meet him.”
Al-Nawawi (may Allaah have mercy on him) said: What this hadeeth means is that the love and hate that are referred to here are those that happen when one enters the stage in which repentance is not accepted, where the dying person is told of his situation and he is shown his destiny.
There are many signs of a good end, which the scholars (may Allaah have mercy on them) have derived from the texts which speak of that. These signs include the following:
1 – Uttering the shaahadah (testimony of faith) when dying, because the Prophet (peace and blessings of Allaah be upon him) said, “A person whose last words are Laa ilaaha ill-Allaah [there is no go but Allaah] will enter Paradise.” Narrated by Abu Dawood, 3116; classed as saheeh by al-Albaani in Saheeh Abi Dawood, 2673.
2 – Dying with sweat on the forehead, because al-Buraydah ibn al-Husayb (may Allaah be pleased with him) said: I heard the Messenger of Allaah (peace and blessings of Allaah be upon him) say, “The believer dies with sweat on his forehead.” Narrated by Ahmad, 22513; al-Tirmidhi, 980; al-Nasaa’i, 1828. Classed as saheeh by al-Albaani in Saheeh al-Tirmidhi.
3 – Dying on the night or day of Friday, because the Messenger of Allaah (peace and blessings of Allaah be upon him) said: “there is no Muslim who dies on the day of Friday or the night of Friday, but Allaah will protect him from the trial (fitnah) of the grave.” Narrated by Ahmad, 6546; al-Tirmidhi, 1074. al-Albaani said: When all its isnaads are taken into consideration, this hadeeth is hasan or saheeh.
4 – Dying as a fighter for the sake of Allaah, because Allaah says (interpretation of the meaning):
“Think not of those as dead who are killed in the way of Allaah. Nay, they are alive, with their Lord, and they have provision.
They rejoice in what Allaah has bestowed upon them of His Bounty and rejoice for the sake of those who have not yet joined them, but are left behind (not yet martyred) that on them no fear shall come, nor shall they grieve.
They rejoice in a grace and a bounty from Allaah, and that Allaah will not waste the reward of the believers”
[Aal ‘Imraan 3:169]
And the Prophet (peace and blessings of Allaah be upon him) said: “Whoever is killed for the sake of Allaah is a martyr, and whoever dies for the sake of Allaah is a martyr.” Narrated by Muslim, 1915.
5 – Dying of the plague, because the Prophet (peace and blessings of Allaah be upon him) said: “The plague is martyrdom for every Muslim.” Narrated by al-Bukhaari, 2830; Muslim, 1916.
It was narrated that ‘Aa’ishah (may Allaah be pleased with her), the wife of the Prophet (peace and blessings of Allaah be upon him), said: I asked the Messenger of Allaah (peace and blessings of Allaah be upon him) about the plague, and he told me that it is a punishment that Allaah sends upon whomsoever He will, and that Allaah has made it a mercy for the believers, for there is no one who stays in his land at the time of a plague, bearing that with patience and seeking Allaah’s reward, knowing that nothing will befall him but that which Allaah has decreed for him, but he will be given a reward like that of a martyr.”
Narrated by al-Bukhaari, 3474.
6 – Dying of a stomach disease. The Prophet (peace and blessings of Allaah be upon him) said: “… and whoever dies of a stomach disease is a martyr.” Narrated by Muslim, 1915.
7 – Dying because of being crushed by a falling wall or by drowning, because the Prophet (peace and blessings of Allaah be upon him) said: “The martyrs are five: the one who dies of plague, the one who dies of a stomach disease, the one who drowns, the one who is crushed by a falling wall, and the one who is martyred for the sake of Allaah.” Narrated by al-Bukhaari, 2829; Muslim, 1915.
8 – If a woman dies as a result of childbirth, or when she is pregnant. The evidence for that includes the hadeeth narrated by Abu Dawood (3111), according to which the Prophet (peace and blessings of Allaah be upon him) said, “A woman who dies with child is a martyr.” al-Khattaabi said: What this means is if she dies with a child in her womb. ‘Awn al-Ma’bood.
And Imam Ahmad narrated (17341) that ‘Ubaadah ibn al-Saamit said: The Messenger of Allaah (peace and blessings of Allaah be upon him) told us about the martyrs and mentioned among them, “A woman who is killed by the child in her womb attains martyrdom, and her child will drag her by his umbilical cord to Paradise.” Classed as saheeh by al-Albaani in Kitaab al-Janaa’iz, p. 39.
9 – Death caused by burning, pleurisy and tuberculosis. The Prophet (peace and blessings of Allaah be upon him) said: “Being killed for the sake of Allaah is martyrdom; the plague is martyrdom; drowning is martyrdom; dying of a stomach disease is martyrdom; and the woman who dies in childbirth, her child will drag her by his umbilical cord to Paradise.” (Abu’l-Awaam, the custodian of Bayt al-Maqdis added: and burning and tuberculosis). Al-Albaani said: Hasan saheeh. Saheeh al-Targheeb wa’l-Tarheeb, 1396.
10 – Dying to defend one’s religion, one’s wealth or one’s life, because the Prophet (peace and blessings of Allaah be upon him) said: “Whoever is killed defending his wealth is a martyr; whoever is killed defending his religion is a martyr; whoever is killed in self-defence is a martyr.” Narrated by al-Tirmidhi, 1421.
Al-Bukhaari (2480) and Muslim (141) narrated that ‘Abd-Allaah ibn ‘Amr (may Allaah be pleased with him) said: I heard the Prophet (peace and blessings of Allaah be upon him) say: “Whoever is killed defending his wealth is a martyr.”
11 – Dying guarding the borders of Islam for the sake of Allaah. Muslim (1913) narrated that Salmaan al-Faarisi (may Allaah be pleased with him) said: The Messenger of Allaah (peace and blessings of Allaah be upon him) said: “Guarding the borders of Islam for one day and one night is better than fasting and praying at night for a whole month, and if he dies (whist performing this duty), he will go on receiving the reward for this great deed and his provision (continually), and he will be spared the questioning in the grave. ”
12 – One of the signs of a good end is dying whilst doing a righteous deed, because the Prophet (peace and blessings of Allaah be upon him) said:
“Whoever says Laa ilaaha ill-Allaah, seeking the Countenance of Allaah thereby, and that is the last of his deeds, will enter Paradise. Whoever gives charity and that is the last of his deeds will enter Paradise.” Narrated by Imam Ahmad, 22813; classed as saheeh by al-Albani in Kitaab al-Janaa’iz, p. 43. See Kitaab al-Janaa’iz by al-Albaani (may Allaah have mercy on him), p. 34.
These are the good signs which point to a good end, but despite that we cannot be certain that a specific person is one of the people of Paradise unless the Prophet (peace and blessings of Allaah be upon him) testified that he will go to Paradise, such as the four khaleefahs.
We ask Allaah to grant us a good end.
Source:http://www.islamqa.com/en/ref/10903
I hope that helps inshaAllah
, as in remind ourselves that will not remain here forever, a constant reminder!
May Allah reward you for each and every word that you typed! 
