Jabir b. Abdullah reported that the Apostle (ﷺ) was delivering the sermon on Friday in a standing posture when a caravan from Syria arrived. The people flocked towards it till no one was left (with the Holy Prophet) but twelve persons, and it was on this occasion that this verse in regard to Jumu'a was revealed." And when they see merchandise or sport. they break away to it and leave thee standing."

When any one of you comes for the Friday (prayer) and the Imam comes out (from his apartment), (even then) should observe two rak'ahs (of prayer).

When any one of you observes the Jumu'a prayer (two obligatory rak'ahs in congregation), he should observe four (rak'ahs) afterwards.

Ali said on the pulpit in the mosque of Kufah: When Friday comes, the devils go to the markets with their flags, and involve people in their needs and prevent them from the Friday prayer. The angels come early in the morning, sit at the door of the mosque, and record that so-and-so came at the first hour, and so-and-so came at the second hour until the imam comes out (for preaching). When a man sits in a place where he can listen (to the sermon) and look (at the imam), where he remains silent and does not interrupt, he will receive a double reward. If he stays away, sits in a place where he cannot listen (to the sermon), silent, and does not interrupt, he will receive the reward only once. If he sits in a place where he can listen (to the sermon) and look (at the imam), and he does not remain silent, he will have the burden of it. If anyone says to his companion sitting besides him to be silent (while the imam is preaching), he is guilty of idle talk. Anyone who interrupts (during the sermon) will receive nothing (no reward) on that Friday. Then he (the narrator) says in the end of this tradition: I heard the Messenger of Allah (ﷺ) say so. Abu Dawud said: This tradition has been narrated by al-Walid b. Muslim from Ibn Jabir. This version adds: bi'l-raba'ith (instead of al-raba'ith, needs preventing the people from prayer). Further, this adds: Freed slave of his wife Umm 'Uthman b. 'Ata.

“The Messenger of Allah (ﷺ) delivered a sermon to us and said: ‘O people! Repent to Allah before you die. Hasten to do good deeds before you become preoccupied (because of sickness and old age). Uphold the relationship that exists between you and your Lord by remembering Him a great deal and by giving a great deal of charity in secret and openly. (Then) you will be granted provision and Divine support, and your condition will improve. Know that Allah has enjoined Friday upon you in this place of mine, on this day, in this month, in this year, until the Day of Resurrection. Whoever abandons it, whether during my lifetime or after I am gone, whether he has a just or an unjust ruler, whether he takes it lightly or denies (that it is obligatory), may Allah cause him to lose all sense of tranquility and contentment, and may He not bless him in his affairs. Indeed, his prayer will not be valid, his Zakat will not be valid, his Hajj will not be valid, his fasting will not be valid, and his righteous deeds will not be accepted, until he repents. Whoever repents, Allah will accept his repentance. No woman should be appointed as Imam over a man, no Bedouin should be appointed as Imam over a Muhajir, no immoral person should be appointed as Imam over a (true) believer, unless that is forced upon him and he fears his sword or whip.’”