The Book of Menstruation
3/33. Chapter:
Evidence that sleeping while sitting does not invalidate wudu’
Sahih Muslim
وَحَدَّثَنِي يَحْيَى بْنُ حَبِيبٍ الْحَارِثِيُّ، حَدَّثَنَا خَالِدٌ، - وَهُوَ ابْنُ الْحَارِثِ - حَدَّثَنَا شُعْبَةُ، عَنْ قَتَادَةَ، قَالَ سَمِعْتُ أَنَسًا، يَقُولُ كَانَ أَصْحَابُ رَسُولِ اللَّهِ صلى الله عليه وسلم يَنَامُونَ ثُمَّ يُصَلُّونَ وَلاَ يَتَوَضَّئُونَ قَالَ قُلْتُ سَمِعْتَهُ مِنْ أَنَسٍ قَالَ إِي وَاللَّهِ .
Qatida reported: I heard Anas as saying that the Companion of the Messenger of Allah (ﷺ) dozed off and then offered prayer and did not perform ablution. He (the narrator) said: I asked him if he had actually heard it from Anas. He said: By Allah. yes.
Reference : Sahih Muslim 376cIn-book reference : Book 3, Hadith 156USC-MSA web (English) reference : Book 3, Hadith 733