243. Commandment to make peace between two parties of believers if they fight against each other
[49:10] And if two parties of believers fight against each other, make peace between them; then if after that one of them transgresses against the other, fight the party that transgresses until it returns to the command of Allah. Then if it returns, make peace between them with equity, and act justly. Verily, Allah loves the just. [49:11]
Surely all believers are brothers. So make peace between brothers, and fear Allah that mercy may be shown to you.