Is the work of one who quarrels, such as prayer and repentance, accepted, and is acceptance restricted to Mondays and Thursdays, to the exclusion of all other days?

Feuding or animosity between two people does not invalidate prayer, nor does it prevent the validity of repentance if its conditions are met. However, animosity is among the grave sins, and it is a cause for being deprived of forgiveness. This is because people's deeds are presented on Mondays and Thursdays, and every servant who does not associate anything with Allah is forgiven, except for those who are at odds. It is said: "Leave these two until they reconcile." A Muslim must avoid it, and if it occurs, he must reconcile and forgive. If the other person refuses, he should not cut ties with him; rather, he should maintain connection, greet him, and fulfill his rights. For the one who reconciles will be forgiven, while the one who cuts ties will bear his sin alone. Animosity is among the grave sins that prevent forgiveness, and it is removed by the reconciliation of both parties.