He who forgets the prayer should say it when he remembers it, there is no explation for it, except this. Qatada said: (Allah says)" And observe prayer for remembrance of Me"
Sahih Muslim Book 5, Hadith 399
← Previous Hadith Abu Qatada reported that when the Messenger of Allah (ﷺ) was in a journey he got down for rest at night, and he used to lie down on his right side, and when he lay down for rest before the dawn, he used to stretch his forearm and place his head over his palm.

Sahih Muslim Book 5, Hadith 398 Next Hadith → This hadith has been narrated by Qatada, but here no mention has been made of" There is no explation for it except this."

Sahih Muslim Book 5, Hadith 400