each of them showing mercy to the others and dealing gently with one another. Such is the true condition of the believers; anything short of that signals a deficiency in faith. Whoever shows no mercy to his fellow believers has a flaw in his faith and may well be denied mercy himself, for “he who shows no mercy will receive no mercy”—and we seek refuge with Allah from that.
Likewise, mutual hatred must be eradicated. Work hard to remove every cause that might breed hostility among you—all of you who are Muslims. Some people hate their own brother over a trifling matter of this world: money, a failure to greet them with a cheerful face, or something equally insignificant. This is wrong. Strive to extinguish hatred between yourself and your brothers as far as you are able, and avoid everything that sparks enmity and rancor, for you are brethren. We ask Allah, exalted be He, to grant us and you whatever leads to goodness and righteousness.

1567 – Anas (may Allah be pleased with him) reported that the Prophet ﷺ said, “Do not hate one another, do not envy one another, do not turn your backs on one another, and do not cut one another off. Be, O servants of Allah, brothers. It is not lawful for a Muslim to shun his brother for more than three days.” Agreed upon.

Explanation (al-Sharḥ): After the author—may Allah have mercy on him—cited the verses prohibiting hatred, severing ties, and turning away, he mentioned a number of hadiths, among them the narration of Anas ibn Malik—may Allah be pleased with him—that