(145) بَابُ لَيْسَ الْمُؤْمِنُ بِالطَّعَّانِ
Abu Hurayra reported that the Prophet, may Allah bless him andgrant him peace, said, "A person who is two-faced cannot be trusted."
Reference: Al-Adab Al-Mufrad 313
In-book reference: Book 15, Hadith 5
English translation: Book 15, Hadith 313