The nullifiers of the shahadah are ten.
1. shirk. Allah subhanahu says:
Innallah laa yaghfiru an yushrika bih. Verily Allah does not forgive those who commit shirk with him. Surah nisa.
2. For a person to choose to reject Islam. Allah says :
wa laa yazaaluna yuqaatilunakum hatta yaruddukum an dinikum inistataa3u. wa man tartadid minkum an deenihi fayamut wa huwa kaafir fa'ulaaika habitat a'maaluhum fiddunya wal'aakhirati wa u'laaika ashaabun naari hum feehaa khaalidun And they will will continue to fight you until they turn you away from your religion if they are able to. And whichsoever ones of you turns away from his religion, and dies as a kaafir, then those their deeds have perished in this world and the aakhirah, and those are the people of the fire surah Baqarah
3. Whoever doesnt apply the ruling of Kufr to a nonmuslim, and says that their way is right. Allah says :
innalladheena kafaru min ahlil kitabi wal mushrikeena fee naari jahannami khaalideena feehaa Verily those who disbelieve from the ahlul kitab and the mushrikeen are in the hell fire for eternity Surah Bayyinah
4. whoever believes that the way of other than the Prophet peace be upon him is more complete, or that the ruling of another is better than the ruling of the Prophet peace be upon him. Allah says :
wa man lam yahkum bima anzallallahu fa'ulaa'ika humul kaafirunAnd whoever doesn not judge by what Allah has revealed , then they are from the Kafirun
5.To hate something that Rasulullah peace be upon him came with. Allah says:
walladheena kafaru fata3san lahum wa adhalla a3maalahum. Dhaalika bi'annahum karihu ma anzalallahu fa'ahbata a3malahum But those who disbelieve in the Oneness of Allah for them is destruction, and Allah will make their deeds vain. That is because they hate which Allah has sent down, so He has made their deeds fruitless
Hey who wants to do the other five? My hands are tired 
Thanx to sister Ruwaydah for pointing out we hadn't completed The 10 Nawaaqidhul Islaam..
Allah Yubaarik feek
So I'm going to post up "the last 5 Nuliifiers of Al-Islaam" bi'idhnillaahi ta'alaa:
6)
من استهزا بالله او بالرسول او بالعماء من اجل علمهم ,او باي شعيرة من شعائر اﻻسﻻم كالصﻻة و الزكاة و الصيام والحج والطواف بالكعبة والوقوف بعرفة او المساجد واﻻذان او اللحية او السنة النبوية ,الى غير ذللك شعائر الله والقددسات اﻻسﻻمية فهو كافر
Whosoever mocks Allah or His Messenger Salallaahu 'alayhi wassalaam or the Qur'aan, or The deen, or the Angels or the Ulamaah, or one of the Sha'aair of Islaam like the Salaah, Zakaah, Fasting, Hajj, Tawaaf round the Ka'bah, and the stay at al-arafah Or; the Masaajid amd the Adhaan or the beard or any other sunnah of the prophet 'alayhis salaam.. for he is Kaafir.
Daleel in The Kitaab:
- Say: "Was it at Allah (عز و جل), and His Ayat (proofs, evidences, verses, lessons, signs, revelations, etc.) and His Messenger (SAW) that you were mocking?".
Make no excuse; you have disbelieved after you had believed. If We pardon some of you, We will punish others amongst you because they were Mujrimun (disbelievers, polytheists, sinners, criminals, etc.). (At-Tawbah;65-66)
-Verily! (During the worldly life) those who committed crimes used to laugh at those who believed.
And whenever they passed by them, used to wink one to another (in mockery);
And when they returned to their own people, they would return jesting; And when they saw them, they said: "Verily! These have indeed gone astray!"
But they (disbelievers, sinners) had not been sent as watchers over them (the believers).
But this Day (the Day of Resurrection) those who believe will laugh at the disbelievers
On (high) thrones, looking (at all things).
Are not the disbelievers paid (fully) for what they used to do? (Al-Mutaffifeen-26-36)
-And when you (Muhammad SAW) see those who engage in a false conversation about Our Verses (of the Quran) by mocking at them, stay away from them till they turn to another topic. And if Shaitan (Satan) causes you to forget, then after the remembrance sit not you in the company of those people who are the Zalimun (polytheists and wrong*doers, etc.). (Al-An'aam;68)
- And it has already been revealed to you in the Book (this Quran) that when you hear the Verses of Allah being denied and mocked at, then sit not with them, until they engage in a talk other than that; (but if you stayed with them) certainly in that case you would be like them. Surely, Allah will collect the hypocrites and disbelievers all together in Hell, (An-Nisaa' - 140)
- and whoever honours the sacred things of Allah, then that is better for him with his Lord.. (Al-hajj;30)
-And whosoever honours the Symbols of Allah, then it is truly from the piety of the heart. (Al-Hajj; 32)
7)
السحر As-Si7r - Black Magic
Daleel from the kitaab:
-but neither of these two (angels) taught anyone (such things) till they had said, "We are only for trial, so disbelieve not (by learning this magic from us)." (Al-Baqarah;102)
8)
مناصرة الكافرين و معا ونتهم على الكفر
Helping the disbelievers against the Muslimeen/following their ways:
Daleel:
-O you who believe! If you obey a group of those who were given the Scripture (Jews and Christians), they would (indeed) render you disbelievers after you have believed!
And how would you disbelieve, while unto you are recited the Verses of Allah, and among you is His Messenger (Muhammad SAW)? And whoever holds firmly to Allah, (i.e. follows Islam Allah's Religion, and obeys all that Allah has ordered, practically), then he is indeed guided to a Right Path.(Aal-Imraan100-101)
- O you who believe! If you obey those who disbelieve, they will send you back on your heels, and you will turn back (from Faith) as losers.
Nay, Allah is your Maula (Patron, Lord, Helper and Protector, etc.), and He is the Best of helpers. (Aal-Imraan;140-150)
-O you who believe! Take not My enemies and your enemies (i.e. disbelievers and polytheists, etc.) as friends, showing affection towards them, while they have disbelieved in what has come to you of the truth (i.e. Islamic Monotheism, this Quran, and Muhammad SAW), and have driven out the Messenger (Muhammad SAW) and yourselves (from your homeland) because you believe in Allah your Lord! If you have come forth to strive in My Cause and to seek My Good Pleasure, (then take not these disbelievers and polytheists, etc., as your friends). You show friendship to them in secret, while I am All-Aware of what you conceal and what you reveal. And whosoever of you (Muslims) does that, then indeed he has gone (far) astray, (away) from the Straight Path.
Should they gain the upper hand over you, they would behave to you as enemies, and stretch forth their hands and their tongues against you with evil, and they desire that you should disbelieve. (Al-Mumtahana;1-2)
- O you who believe! Take not as friends the people who incurred the Wrath of Allah (i.e. the Jews). Surely, they have been in despair to receive any good in the Hereafter, just as the disbelievers have been in despair about those (buried) in graves (that they will not be resurrected on the Day of Resurrection).(Al-Mumtahanah;13)
.. There's two more Nullifiers left, they're very long so i'll post them up for you sumtime tommorrow Ruwaydah... 'afwan
( which really means: wax badan :hiding: )
