Imam Ja‘far al-Ṣadiq (as): Verily Satan provokes enmity and hatred among the believers and he does that until one of them denounces his religion and when that happens, Satan reclines on his back and stretches his body saying: 'I have succeeded.' May Allah have mercy on a person who makes peace between two friends of ours. O assembly of the believers, be united and amiable to each other. al-Kāfī