Prayer (Kitab Al-Salat)
2/15. Chapter:
Whoever Sleeps Through The Prayer (Time) Or Forgets (To Pray)
Sunan Abi Dawud
حَدَّثَنَا مُحَمَّدُ بْنُ كَثِيرٍ، أَخْبَرَنَا هَمَّامٌ، عَنْ قَتَادَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " مَنْ نَسِيَ صَلاَةً فَلْيُصَلِّهَا إِذَا ذَكَرَهَا لاَ كَفَّارَةَ لَهَا إِلاَّ ذَلِكَ " .
Anas b. Malik reported the Prophet (ﷺ) as saying: If any one forgets a prayer or oversleeps, he should observe it when he remembers it ; there is no expiation for it except that.
Reference : Sunan Abi Dawud 442In-book reference : Book 2, Hadith 52English translation : Book 2, Hadith 442