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.