Surah Al-Hujurat (The Private Quarters), Verse 10

اِنَّمَا الْمُؤْمِنُوْنَ اِخْوَةٌ فَاَصْلِحُوْا بَیْنَ اَخَوَیْكُمْ وَاتَّقُوا اللّٰهَ لَعَلَّكُمْ تُرْحَمُوْنَ 

Innamal mu'minoona ikhwatun fa aslihoo baina akhawaykum wattaqul laaha la'allakum turhamoon

“The Believers are but a single Brotherhood: So make peace and reconciliation between your two (contending) brothers; and fear Allah, that ye may receive Mercy.”

Quran 49:10 (Yusuf Ali Translation)