Yahya related to me from Malik that he asked Ibn Shihab about talking in the jumua after the imam had come down from the mimbar but before he had said the takbir. Ibn Shihab said, "There is no harm in that."
Muwatta Malik Book 5, Hadith 11
← Previous Hadith Yahya related to me from Malik that he had heard that a man sneezed on the day of jumua while the imam was giving the khutba, and a man by his side asked Allah to bless him. Said ibn al Musayyab was asked about it and he forbade the man to do what he had done and said, "Don't do it again."

Muwatta Malik Book 5, Hadith 10 Next Hadith → Yahya related to me from Malik that Ibn Shihab used to say, "Some one who catches a raka of the jumua prayer should pray another one with it." Ibn Shihab said, "That is the sunna."

Malik said, "I saw the people of knowledge in our city doing that. That is because the Messenger of Allah, may Allah bless him and grant him peace, said, 'Whoever catches a raka of the prayer has caught the prayer.' "

Malik said, concerning some one who was in a crowd on the day of jumua and did the ruku but was not able to go into sajda until the imam had risen or finished his prayer, "If he is able to do the sajda and has already done the ruku then he should do the sajda when the people stand up. If he is unable to do thesajda until after the imam has finished the prayer, then I prefer that he begins the prayeragain and does the four rakas of dhuhr."

Muwatta Malik Book 5, Hadith 12