The Book of Prayers (Kitab Al-Salat)

Muslim :: Book 4 : Hadith 1454

Qatada reported from Anas b. Malik that the Messenger of Allah (may peace be upon him) said: 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"