(10) باب مَنْ نَامَ عَنِ الصَّلاَةِ، أَوْ نَسِيَهَا
It was narrated that Anas bin Malik said:
'The Prophet was asked about a man who forgets prayer or sleeps and misses it. He said: 'he performs it when he remembers it.'"
Reference: Sunan Ibn Majah 695
In-book reference: Book 2, Hadith 29
English translation: Vol. 1, Book 2, Hadith 695