Hadith Qudsi
Hadith Qudsi Number - 020 : The Authority Of Abu Hurayrah
The Messenger of Allah (peace be upon him) said : "The gates of Paradise will be opened on Mondays and on Thursdays, and every servant [of Allah] who associates nothing with Allah will be forgiven, except for the man who has a grudge against his brother. [About them] it will be said: Delay these two until they are reconciled; delay these two until they are reconciled."
Reporters
It was related by Muslim (also by Malik and Abu Dawud).