“I entered with my father upon
‘Abdullah, and I heard him say: ‘The messenger of Allah (ﷺ)
said:
“Regret is repentance.” My father said: ‘Did you hear the
Prophet
(ﷺ) say: “Regret is repentance?” He said: ‘Yes.’”
Sunan Ibn Majah Book 37, Hadith 153