Muwatta Malik #288
Tahajjud
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 عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ، أَنَّهُ صَنَعَ مِثْلَ الَّذِي صَنَعَ ابْنُ عُمَرَ .
Yahya related to me from Malik from Abd ar-Rahman ibn al-Qasim
that al-Qasim ibn Muhammad had done the same as Ibn Umar.
About Muwatta Malik
This hadith is #288 from Muwatta Malik, in the Book of Tahajjud.