´It was narrated that Anas said:` "The Messenger of Allah (ﷺ) was asked about a man who slept and missed the prayer, or forgot it. He said: 'The expiation for that is to pray it when he remembers it.'"
Hadith Referenceسنن نسائي / كتاب المواقيت / 615
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح
Hadith Takhrij«سنن ابن ماجہ/الصلاة 10 (695)، مسند احمد 3/267، (تحفة الأشراف: 1151) (صحیح)»
´It was narrated that Abu Qatadah said:` "They told the Prophet (ﷺ) that they had slept and missed the prayer. He said: 'There is no negligence when one sleeps, rather negligence is when one is awake. If any one of you forgets a prayer or sleeps and misses it, let him pray it when he remembers it.'"
´It was narrated that Abu Qatadah said:` "The Messenger of Allah (ﷺ) said: 'There is no negligence when one sleeps, rather negligence is when one does not offer one prayer until the time of the next prayer comes and he realizes that he has missed a prayer.'"
Hadith Referenceسنن نسائي / كتاب المواقيت / 617
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم