It is related from Abu Hurayra that the Prophet صلى الله عليه وسلم said, “You will find people to be like mines*. The best of them in the Jahiliyya are the best of them in Islam when they have understanding. You will find the best of people in this business (of command) to be those who dislike it the most, and you will find the worst of people are the two-faced who come to these people with one face and those people with another face.”

Sahih Bukhari

*Mines contain different minerals, some precious and some base.