Muwatta Malik #235
Jumu'a
The Arabic includes the chain of narration (sanad) and the collector's commentary; the English translation shows the Prophet's words only.
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ سَأَلَ ابْنَ شِهَابٍ عَنِ الْكَلاَمِ، يَوْمَ الْجُمُعَةِ إِذَا نَزَلَ الإِمَامُ عَنِ الْمِنْبَرِ، قَبْلَ أَنْ يُكَبِّرَ، . فَقَالَ ابْنُ شِهَابٍ لاَ بَأْسَ بِذَلِكَ .
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."
About Muwatta Malik
This hadith is #235 from Muwatta Malik, in the Book of Jumu'a.