You find people like metal; the best of them in the pre-Islamic era are the best of them in Islam, if they understand. And you find the best of people in this matter are those who detest it most. And you find the most evil of people are the two-faced; the ones who come to these with one face and to those with another. [Al-Bukhari and Muslim]

«تَجِدُون النَّاسَ مَعَادِن: خِيَارُهُم فِي الجَاهِليَّة خِيَارُهُم فِي الإِسْلاَم إِذَا فَقِهُوا، وَتَجِدُون خِيَار النَّاس فِي هَذَا الشَّأْن أَشَدُّهُم كَرَاهِيَة لَه، وَتَجِدُون شَرَّ النَّاس ذَا الوَجْهَين، الَّذِي يَأْتِي هَؤُلاَء بِوَجه، وَهَؤُلاَء بِوَجْه». [متفق عليه]