[49. Surah Al-Hujurat : Ayah 9-10]

“And if two parties of the believers quarrel, make peace between them; but if one of them acts wrongfully towards the other, fight that which acts wrongfully until it returns to Allah’s command; then if it returns, make peace between them with justice and act equitably; surely Allah loves those who act equitably. The believers are but brethren, therefore make peace between your brethren and be careful of (your duty to) Allah that mercy may be had on you. ”

Narrated Um Kulthum bint Uqba (Radi Allah Anhu): That she heard Allah’s Apostle (sal-allahu-alleihi-wasallam) saying, “He who makes peace between the people by inventing good information or saying good things, is not a liar.”
[Sahih Bukhari : Volume 3, Book 49, Number 857-858]

Narrated Sahl bin Sad (Radi Allah Anhu) : Once the people of Quba fought with each other till they threw stones on each other. When Allah’s Apostle (sal-allahu-alleihi-wasallam) was informed about it, he said, “Let us go to bring about a reconciliation between them.”