It was narrated that Anas bin Malik said:"The Messenger of Allah said: 'Whoever forgets a prayer, let him perform it when he remembers it
Hadith No. 696
Sunan Ibn Majah
Gradings:
Al-Albani:
Sahih
Muhammad Fouad Abd al-Baqi:
Sahih
Zubair Ali Zai:
Sahih