Hadis No: 1812

It wasnarrated from Abu Hurairah that the Prophet (ﷺ) used to fastonMondays and Thursdays. It was said: “O Messenger of Allah, why doyou fast on Mondays and Thursdays?” He said: “On Mondays andThursdaysAllah forgives every Muslim except two who have forsakenone another.He says: ‘Leave these two until they reconcile.’”