O ye who believe! Avoid suspicion as much (as possible): for suspicion in some cases is a sin: And spy not on each other behind their backs. Would any of you like to eat the flesh of his dead brother? Nay, ye would abhor it...But fear God: For God is Oft-Returning, Most Merciful. (49:12)

Woe to every (kind of) scandal-monger and-backbiter, (104:1)