وَلا يَكُن اَهلُكَ اَشقَى الخَلقِ بِكَ وَلا تَرغَبَنَّ فِيمَن زَهِدَ عَنكَ وَلا يَكونَنَّ اَخُوكَ عَلى قَطِيعَتِكَ اَقوى مِنكَ عَلى صِلَتِه وَلا يَكُونَنَّ على الإسَاءَةِ اقوى مِنكَ على الإحسَانِ وَلا يَكبُرَنَّ عَليكَ ظُلْمُ مَن ظَلمَكَ فإنَّهُ يَسْعى في مَضَرّتِه ونَفعِكَ ولَيسَ جَزاءُ مَن سَرَّكَ ان تَسُوءَه" “Against the unfriendly behavior of your brother, do the following: when he severs his relationship with you, you (continue to) establish relations with him.
When he turns away from you, you show kindness and draw close to him. When he is stingy, be generous towards him; when he moves away, you come near to him. When he is harsh, you be gentle towards him. When he commits an offense, forgive him. Treat him so until it is as if you are his slave and he is your benefactor. But take care not to do this where it is inappropriate or to one who is not worthy of it.
Never take the enemy of your friend as your friend, for in this way you will incur the hostility of your friend. Be sincere in your advice to your brother whether this advice is good or ugly (in his opinion). Swallow your anger, for I have not seen a draught sweeter in outcome than it, or with a more pleasant result. Be gentle to one who treats you harshly: he will soon be gentle towards you. Treat your enemy with favours, because it is the sweeter of the two victories (i.e.