Surah Al Hujurat -especially about mocking and making fun of others.
(49:11) Believers,19 let not a group (of men) scoff at another group, it may well be that the latter (at whom they scoff) are better than they;20 nor let a group of women scoff at another group, it may well be that the latter are better than they.20 And do not taunt one another,21 nor revile one another by nicknames.22 It is an evil thing to gain notoriety for ungodliness after belief.23 Those who do not repent are indeed the wrong-doers. 19. In the preceding two verses after giving necessary instructions about the Muslim people’s mutual fighting, the believers were made to realize that by virtue of the most sacred relationship of the faith they were brothers to one another, and they should fear God and try to keep their mutual relations right. Now, in the following two verses, they are being enjoined to avoid and shun those major evils which generally spoil the mutual relationships of the people in a society. Slandering and taunting the people and harboring suspicions and spying ...