At-Tahrim (Holding Something Unlawful)
Surah 66 · Verse 6
O you who believe! save yourselves and your people from a fire, the fuel of which is human beings and stones, over it are angels stern, severe, who do not disobey Allah in that which He commands them (to do) and they do as they are commanded.
Believers are given some instructions and the infidels are warned.
