living islam _ Islamic tradition

On the authority of Abu Hurayrah (may Allah be pleased with him) that
the Messenger of Allah (may the blessings and peace of Allah 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; delay these two until they
are reconciled.