Sunan At-Tirmidhi

Abu Hurairah narrated that the Prophet (s.a.w) said:""Beware of evil with each other, for indeed it is the Haliqah."" [The meaning of his saying]: ""Süw'a Dhãt Al-Bain (evil with each other) is enmity and hatred, and his saying: ""The Haliqah"" [it is said] that it severs the religion