The Book of Virtue, Good Manners and Joining of the Ties of Relationship (Kitab Al-Birr was-Salat-I-wa'l-Adab)
Muslim :: Book 32 : Hadith 6218
Abu Huraira reported Allah's Messenger (may peace be upon him) as saying: Don't bear aversion against one another and don't be jealous of one another and be servants of Allah.