Hadith 5029
وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: تُفْتَحُ أَبْوَابِ الْجَنَّةِ يَوْمَ الِاثْنَيْنِ وَيَوْمَ الْخَمِيسِ فَيُغْفَرُ لِكُلِّ عَبْدٍ لَا يُشْرِكُ بِاللَّهِ شَيْئًا إِلَّا رجلا كَانَتْ بَيْنَهُ وَبَيْنَ أَخِيهِ شَحْنَاءٌ فَيُقَالُ: انْظُرُوا هذَيْن حَتَّى يصطلحا . رَوَاهُ مُسلم
Abu Huraira (may Allah be pleased with him) reports that the Messenger of Allah (peace and blessings be upon him) said: "The gates of Paradise are opened on Mondays and Thursdays, and every servant who does not associate anything with Allah is forgiven, except for the person who has enmity and hatred with his brother. It is said: Give them respite until they reconcile." Narrated by Muslim.