Abu Hurairah (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: "When it is the day of Jumu'ah, a man should perform ghusl, wash his head, then apply his best perfume, wear his finest clothes, then go to the prayer and not separate two people, then listen attentively to the Imam. Then the sins committed between this Jumu'ah and the previous Jumu'ah, and an additional three days, will be forgiven for him."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he (peace be upon him) said: "When you speak on the day of Jumu'ah while the Imam is delivering the sermon, then you have engaged in idle talk and wasted your reward."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that I heard the Messenger of Allah (peace and blessings be upon him) say: "When you say to your companion 'Be quiet' while the Imam is delivering the sermon on the day of Jumu'ah, then you have engaged in idle talk." These are the words of the narration of 'Abdur Razzaq. The rest of the narrators did not mention hearing (sama'). Some narrators said, "The Messenger of Allah (peace and blessings be upon him) said," and some said, "From the Prophet (peace and blessings be upon him)."

Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates from the Noble Prophet (peace and blessings be upon him) that he said: "When a person says to another person, 'Be quiet,' while the Imam is delivering the sermon, then he has done an idle and vain act." "Laghayta" is the wording of Sayyiduna Abu Hurairah (may Allah be pleased with him). Janab Makhzumi has narrated these words: "When you say to your companion, 'Be quiet,' on the day of Jumu'ah while the Imam is delivering the sermon, then you have done a useless and futile act." Imam Sufyan says that Sayyiduna Abu Hurairah's (may Allah be pleased with him) saying "Laghayta" is his personal wording, while the original word is "Laghowta." (The meaning is the same.)

Sayyiduna Abu Dharr (may Allah be pleased with him) narrates that I entered the mosque on Friday while the Prophet (peace and blessings of Allah be upon him) was delivering the sermon. So I sat near Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him), and the Prophet (peace and blessings of Allah be upon him) was reciting Surah Bara'ah (Tawbah). I asked Sayyiduna Ubayy (may Allah be pleased with him), "When was this Surah revealed?" He frowned at me and silenced me, and did not speak to me. After a while, I asked him again, so he sternly silenced me and did not speak to me. Then I remained silent for a little while, then I asked him again, so he frowned at me and silenced me and did not converse with me. Then, when the Prophet (peace and blessings of Allah be upon him) had finished the prayer, I asked Sayyiduna Ubayy (may Allah be pleased with him), "I asked you a question, but you frowned at me and silenced me and did not give me any answer." So Sayyiduna Ubayy (may Allah be pleased with him) said, "You have received no reward for your prayer except for your idle talk (sin)." Therefore, I went to the Prophet (peace and blessings of Allah be upon him) and submitted, "O Messenger of Allah, I was sitting beside Sayyiduna Ubayy (may Allah be pleased with him) while you were reciting Surah Bara'ah, so I asked him when this Surah was revealed, but he frowned at me and silenced me and did not give me any answer. Then he said, 'You have received no reward for your prayer except for this idle talk.'" So the Prophet (peace and blessings of Allah be upon him) said, "Ubayy has spoken the truth."

The Imam has narrated through the chain of Ibn Abi Maryam similar to what has been mentioned above.

Sayyiduna Ibn Abbas (may Allah be pleased with them both) narrates that the Messenger of Allah (peace and blessings be upon him), while delivering the sermon on Friday, recited a verse. A man who was sitting beside Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) asked, "When was this verse revealed? For I have just now heard this verse." So Sayyiduna Abdullah (may Allah be pleased with him) said, "Subhan Allah." Thus, the man became silent. Then, when the Prophet (peace and blessings be upon him) recited another verse, that man again asked Sayyiduna Abdullah (may Allah be pleased with him) in the same manner. So Sayyiduna Abdullah (may Allah be pleased with him) again said, "Subhan Allah," and made him silent. Then, when the Messenger of Allah (peace and blessings be upon him) completed the prayer, Sayyiduna Ibn Mas'ud (may Allah be pleased with him) said to that man, "You have not performed Jumu'ah with us." The man, in astonishment, said, "Subhan Allah," then he went to the Prophet (peace and blessings be upon him) and related the whole incident. So the Messenger of Allah (peace and blessings be upon him) said, "Ibn Umm Abd has spoken correctly — Ibn Umm Abd has spoken rightly."

Sayyiduna Abdullah bin Amr bin Al-As (may Allah be pleased with him) narrates from the Messenger of Allah (peace and blessings be upon him) that he (peace and blessings be upon him) said: "Whoever performs ghusl on the day of Jumu'ah, then applies perfume from his wife's perfume if he has any perfume, and wears his best clothes, then (when he comes to the mosque) does not step over people's necks and does not engage in any idle activity during the sermon, then these actions will be an expiation for the sins committed between the two Fridays. And whoever engages in idle activity or steps over necks, he will receive the reward of the Zuhr prayer."

Imam Abu Bakr, may Allah have mercy on him, says that in the narration of Sharik bin Abdullah from Sayyiduna Anas, may Allah be pleased with him, regarding the story of the one who asked about the Hour, it is mentioned that "So the people signaled to him to be quiet."