البر والصلة والآداب : Hadeeth No:6300
Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: The worst amongst the people is the double-faced one; he comes to some people with one face and to others with the other face....
الإيمان : Hadeeth No:58
Zuhri has narrated this hadith with the addition of these words: He (the Prophet) happened to pass by a mass of Ansar who was instructing his brother (about modesty)....