The Messenger of Allah ﷺ said, "The gates of Paradise are opened on Mondays and Thursdays, and on these two days everyone who does not associate anything with Allah is forgiven, except for two who have severed ties with one another. It is said, 'Hold back these two until they reconcile.'"
حدثنا قتيبة حدثنا عبد العزيز بن محمد عن سهيل بن أبي صالح عن أبيه
أن رسول الله ﷺ قال تفتح أبواب الجنة يوم الاثنين والخميس فيغفر فيهما لمن لا يشرك بالله شيئا إلا المهتجرين يقال ردوا هذين حتى يصطلحا
Muslim also related it in the Book of Righteousness and Kinship Ties, Chapter on the Prohibition of Estrangement, hadith no. 2565, from Qutayba, with the same wording.Hadith: "It is not permissible for a Muslim to shun his brother..." etc. Agreed upon, as mentioned previously at 1932.