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 (PBUH) 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. Translation Not Available

Book Ref: Sahih Muslim Book 3 Hadith 733
Web Ref:  Sahih Muslim Book 3 Hadith 376 c

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