The Messenger of Allah ﷺ said, "The gates of Paradise are opened on Mondays and Thursdays, and every servant who does not associate anything with Allah is forgiven, except a man between whom and his brother there is enmity. It is said, 'Hold off on these two until they reconcile. Hold off on these two until they reconcile. Hold off on these two until they reconcile.'"
أن رسول الله ﷺ قال: تفتح أبواب الجنة يوم الاثنين، ويوم الخميس، فيغفر لكل عبد لا يشرك بالله شيئا، إلا رجلا كانت بينه وبين أخيه شحناء، فيقال: أنظروا هذين حتى يصطلحا، أنظروا هذين حتى يصطلحا، أنظروا هذين حتى يصطلحا.
Malik narrated it in Husn al-Khuluq (17) from Suhayl bin Abu Salih, from his father, from Abu Hurairah, and he mentioned it. Muslim narrated it in Birr wa Silah (2565) via the route of Malik, with this wording being his.