Abu Hurayra reported that the Messenger of Allah ﷺ said, "The worst person is someone who is two-faced. He is the person who comes to one group of people with one face and another group of people with another face."

أَنَّ رَسُولَ اللهِ ﷺ قَالَ مِنْ شَرِّ النَّاسِ ذُو الْوَجْهَيْنِ الَّذِي يَأْتِي هَؤُلاَءِ بِوَجْهٍ وَهَؤُلاَءِ بِوَجْهٍ