5. The Book of Mosques and Places of Prayer - كتاب الْمَسَاجِدِ وَمَوَاضِعِ الصَّلاَةِ
55) Chapter: Compensation Of The Missed Prayer And Excellence Of Observing It Promptly
Qatada reported from Anas b. Malik that the Messenger of Allah (ﷺ) 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"