(27) باب مَا يُكْرَهُ مِنْ ثَنَاءِ السُّلْطَانِ، وَإِذَا خَرَجَ قَالَ غَيْرَ ذَلِكَ
Narrated Abu Huraira:
Allah's Messenger (ﷺ)s said, "The worst of all mankind is the double-faced one, who comes to some people with one face and to others, with another face."
Reference: Sahih al-Bukhari 7179
In-book reference: Book 93, Hadith 42
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 9, Book 89, Hadith 290