كتاب الصلاة
2  
The Book of Prayer
Bulugh al-Maram 186
Narrated Abu Qatadah (RA) in a long Hadith about their (Sahaba) sleeping late past the time of Salat (prayer):
Then Bilal proclaimed the Adhan and the Prophet (ﷺ) offered the prayer (while leading the Companions) as he used to do every day. [Reported by Muslim].
وَعَنْ أَبِي قَتَادَةٌ فِي اَلْحَدِيثِ اَلطَّوِيلِ, { فِي نَوْمهُمْ عَنْ اَلصَّلَاةِ ‏- ثُمَّ أَذَّنَ بِلَالٌ, فَصَلَّى رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-كَمَا كَانَ يَصْنَعُ كُلَّ يَوْمٍ } رَوَاهُ مُسْلِمٌ 1‏ .‏
Reference : Bulugh al-Maram 186
In-book reference : Book 2, Hadith 186
English translation : Book 2, Hadith 186
Hadith Text
Reference