Muwatta Malik #189
Prayer
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، عَنْ يَحْيَى بْنِ سَعِيدٍ، وَعَنْ رَبِيعَةَ بْنِ أَبِي عَبْدِ الرَّحْمَنِ، أَنَّ الْقَاسِمَ بْنَ مُحَمَّدٍ، كَانَ يَقْرَأُ خَلْفَ الإِمَامِ فِيمَا لاَ يَجْهَرُ فِيهِ الإِمَامُ بِالْقِرَاءَةِ .
Yahya related to me from Malik from Yahya ibn Said and from Rabia
ibn Abi Abd ar Rahman that al-Qasim ibn Muhammad used to recite behind
the imam when the imam did not recite aloud.
About Muwatta Malik
This hadith is #189 from Muwatta Malik, in the Book of Prayer.