Muwatta Malik #322
Prayer in Congregation
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 رَبِيعَةَ بْنِ أَبِي عَبْدِ الرَّحْمَنِ، أَنَّ مُحَمَّدَ بْنَ عَمْرِو بْنِ حَزْمٍ، كَانَ يُصَلِّي فِي الْقَمِيصِ الْوَاحِدِ .
Yahya related to me from Malik from Rabia ibn Abi Abd ar-Rahman
that Muhammad ibn Amr ibn Hazm used to pray in a single long shirt.
About Muwatta Malik
This hadith is #322 from Muwatta Malik, in the Book of Prayer in Congregation.