The lowest degree of Eeman

Hadrat Abu Sad al-Khidri (Radi Allaahu Ta’ala Anhu) narrated that the Messenger of ALLAH said, “If any one of you notices any thing evil and against the Sharii’ah, it is incumbent on him to set it right  by force, if he possesses it, and through advice if he has no force or power, and if he is not in a position to do this even, then abhor it from the core of his heart. This is the lowest degree of Eeman.  [Muslim, Ma’arif-ul-Hadis]