A bit harsh innit? (Even though it's probably true in many cases - and not true in many where there is lawful and valid wisdom).
Especially when there are so many big crimes happening on which time spent attempting to rectify or at least (yughayyir bi lisaan) would be better spent. sounds very self-righteous or possibly even jealous lol.
I was thinking that the people getting up and rushing out were practicing nifaq based on the statement i read somewhere about the last to enter the mosque and the first to leave when i first started going to the mosque regularly, and recall that the respected imam of East London Mosque once acknowledged the brothers and sisters who had used a large part of their lunch breaks or taken leave from employers or businesses in order to come to the congregation and get the compulsory duties completed, and i think (can't recall fully) he also mentioned the "last to enter and first to leave" statement in context - i saw it in context after his wise and informative attempt at Islaah anyway.
The good and indignant imam would do better if he acknowledged the ones who had come to seek the good pleasure of Allah and others who are probably mostly walking out simply because they have lawful priority needs or because they don't understand the meaning or benefit of what they are chanting - so he too may have possibly fallen short in his responsibilities to his congregation in that his message is likely reaching their ears and throats, not being processed well by their minds, and therefore not reaching their hearts.
To set the record straight - jumu'ah congregation essentially consists of a truthful and sincere speech
for Allah's sake and not for taaghoots' sake - in which good is advised/enjoined and wrong is dettered/prevented - and two rakahs of prayer.
Qabl al jumu'ah means before congregation(al prayer) and Ba'd al jumu'ah means after congregation(al prayer) -and these are not jumu'ah prayer - a bida'ah (innovation) should not be constructed by attempting to add other prayers to it to the extent that those who fulfil the rights of Allah are condemned. Tahiyyat al masjid is also different although enjoined upon the one who enters the masjid when and/or if it is fair to do so.
It is reported (link below) that the ending verses of surah al jumu'ah were revealed when the people ran out during the address for Allah's sake by the messenger of Allah who was the leader of the congregation - and Allah tells people that they can leave after the congregational prayer.
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Allah said,
﴿إِذَا نُودِىَ لِلصَّلَوةِ مِن يَوْمِ الْجُمُعَةِ﴾
(When the call is proclaimed for the Salah on Friday,) referring to the Adhan which was called, during the time of the Prophet , when he came out of his house and sat on the Minbar. The Adhan would be called before the Prophet near the door of the Masjid. As for the earlier Adhan that the Leader of the faithful, `Uthman bin Affan added, it was done because the Muslims increased in number during his time. Al-Bukhari recorded that As-Sa'ib bin Yazid said, "In the lifetime of the Prophet , Abu Bakr and `Umar, the Adhan for the Friday prayer was pronounced while the Imam sat on the pulpit. But during `Uthman's later time when the Muslims increased in number, an additional call was pronouced upon Az-Zawra', meaning the Adhan was called upon the house which was called Az-Zawra''' Az-Zawra' was the tallest house in Al-Madinah near the Masjid.
Allah said,
﴿وَذَرُواْ الْبَيْعَ﴾
(and leave off business.) means, hastening to the remembrance of Allah and abandoning business, when the call to the Friday prayer is made. Therefore, the scholars of Islam agree, it is prohibited for Muslims to engage in business transactions after the second Adhan. Allah's statement,
﴿ذَلِكُمْ خَيْرٌ لَّكُمْ إِن كُنتُمْ تَعْلَمُونَ﴾
(That is better for you if you did but know!) means, `your abandoning buying and selling, and instead, corcentrating your attention to Allah's remembrance and the prayer are better for you in this life and the Hereafter, if you but knew.' Allah's statement,
﴿فَإِذَا قُضِيَتِ الصَّلَوةُ﴾
(Then when the Salah is complete,) means, when the Friday prayer is finished,
﴿فَانتَشِرُواْ فِى الاٌّرْضِ وَابْتَغُواْ مِن فَضْلِ اللَّهِ﴾
(you may disperse through the land, and seek the bounty of Allah,) After Allah forbade Muslims from working after hearing the Adhan and ordered them to gather for the Friday prayer, He allowed them to spread throughout the earth and seek bounty after the prayer is finished. Ibn Abi Hatim recorded that when the Friday prayer finished, `Irak bin Malik would stand by the gate of the Masjid and invoke Allah, saying, "O Allah! I have accepted and complied with Your Call, performed the prayer You ordered and dispersed as You ordered me. Therefore, grant me of Your favor and You are the best of those who grant provisions.'' Allah's statement,
﴿وَاذْكُرُواْ اللَّهَ كَثِيراً لَّعَلَّكُمْ تُفْلِحُونَ﴾
(and remember Allah much, that you may be successful.) means, while you are buying and selling, giving and taking, remember Allah much and do not let this life busy you from what benefits you in the Hereafter. There is a Hadith that states,
«مَنْ دَخَلَ سُوقًا مِنَ الْأَسْوَاقِ فَقَالَ: لَا إِلَهَ إِلَّا اللهُ وَحْدَهُ لَا شَرِيكَ لَهُ، لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٌ، كَتَبَ اللهُ لَهُ أَلْفَ أَلْفِ حَسَنَةٍ وَمَحَا عَنْهُ أَلْفَ أَلْفِ سَيِّئَةٍ»
(Whoever enters a marketplace and says, "La ilaha illallah, He is alone without partners, His is the sovreignty and His is the praise, and He is Able to do all things.'' Then Allah will record a thousand-thousand (a million) good deeds for him and will erase a thousand-thousand evil deeds.) Mujahid said, "A servant (of Allah) will not be among those who remember Allah often, until he does so while standing, sitting and lying down.''
﴿وَإِذَا رَأَوْاْ تِجَـرَةً أَوْ لَهْواً انفَضُّواْ إِلَيْهَا وَتَرَكُوكَ قَآئِماً قُلْ مَا عِندَ اللَّهِ خَيْرٌ مِّنَ اللَّهْوِ وَمِنَ التِّجَـرَةِ وَاللَّهُ خَيْرُ الرَزِقِينَ ﴾
(11. And when they see some merchandise or some amusement, they disperse headlong to it, and leave you standing. Say: "That which Allah has is better than any amusement or merchandise! And Allah is the best of providers.'')
The Prohibition of leaving the Masjid while the Imam is delivering the Friday Sermon
Allah criticizes what happened during one Friday sermon, when a caravan arrived at Al-Madinah and the people rushed out to the merchandise. Allah said,
﴿وَإِذَا رَأَوْاْ تِجَـرَةً أَوْ لَهْواً انفَضُّواْ إِلَيْهَا وَتَرَكُوكَ قَآئِماً﴾
(And when they see some merchandise or some amusement, they disperse headlong to it, and leave you standing.) meaning, on the Minbar, delivering the Khutbah. Several of the Tabi`in said this, such as Abu Al-`Aliyah, Al-Hasan, Zayd bin Aslam and Qatadah. Muqatil bin Hayyan said that the caravan belonged to Dihyah bin Khalifah before he became a Muslim, and there were drums accompanying it.So they rushed to the caravan and left Allah's Messenger standing on the Minbar. Only a few remained, according to the authentic Hadith that Imam Ahmad recorded that Jabir said, "Once, a caravan arrived at Al-Madinah while Allah's Messenger was giving a Khutbah. So, the people left, and only twelve men remained ﴿with the Messenger ﴾. Then Allah sent down this Ayah,
﴿وَإِذَا رَأَوْاْ تِجَـرَةً أَوْ لَهْواً انفَضُّواْ إِلَيْهَا﴾
(And when they see some merchandise or some amusement, they disperse headlong to it,)'' The Two Sahihs also recorded this Hadith. Allah's statement,
﴿وَتَرَكُوكَ قَآئِماً﴾
(And leave you standing.) proves that the Imam should deliver the speech on Friday while standing. In his Sahih, Imam Muslim recorded that Jabir bin Samurah said, "(During Jumu`ah,) the Prophet gave two speeches, and he used to sit between them. The Prophet would recite the Qur'an and remind the people (of Allah).'' Allah's statement,
﴿قُلْ مَا عِندَ اللَّهِ﴾
(Say: "That which Allah has...'') means the reward that is with Allah in the Hereafter,
﴿خَيْرٌ مِّنَ اللَّهْوِ وَمِنَ التِّجَـرَةِ وَاللَّهُ خَيْرُ الرَزِقِينَ﴾
(is better than any amusement or merchandise! And Allah is the best of providers.) means, for those who trust in Him and seek His provisions when they are allowed to do so. This is the end of the Tafsir of Surat Al-Jumu`ah. All praise and thanks are due to Allah and from Him comes the success and immunity from error.
http://www.qtafsir.com/index.php?option=com_content&task=view&id=1342&Itemid=118
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Another small mention - Jumu'ah khutbah and prayer is to be done for Allah's sake and not for the sake of fitnah and abad-at-taaghoot. It is a testament to the dire situation of the planet when globally known people are forced to resort to avoidance of the masaajid like the youth of surah al kahf due to the fact their often well meaning imams are forced by lowly secularist extremist criminals to make false fatwas causing unnecessary strife and debate in defiance of truth and reason.
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The Messenger said: “whoever hears the call to prayer, and does not respond, then there is no prayer for him unless he has a valid excuse.” [Authenticated by Al-Albani]
«من سمع النِّداء فلم يُجب فلا صلاة له إلا من عذر» صححه الألباني