From Abu Qatadah (may Allah be pleased with him), the Companions of the Messenger of Allah, he said: I entered the mosque while the Messenger of Allah was sitting between two people's backs, then I sat down. Then the Messenger of Allah (saw) said: What is preventing you from performing ruku (prayer) two rak'ahs before you sit down. Then I said: O Messenger of Allah, I see you sitting, and people are sitting too. He said: So if one of you enters into the mosque, let him not sit down until he prays two rak'ahs. (HR. Muslim).

From Salman al-Farisi, he said, the Holy Prophet said: "It is not someone to bathe and purify as much as possible on Friday, use hair oil or use perfume in his house then come out then he does not separate between two people (in the shaff) then do prayer and then he is silent (not talking) if the preacher preaches, but will be given forgiveness to him (for mistakes that occur) between Friday with the next Friday. "(Narrated by Bukhari).