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 (PBUH) 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. Translation Not Available
Book Ref: Sunan Abi Dawud Book 2 Hadith 442
Web Ref: Sunan Abi Dawud Book 2 Hadith 442