O you who have believed, let not any people scoff at (another) people who may be more charitable than they; neither let women scoff (other) women who may be more charitable (i.e., better) than they. And do not defame one another, (Literally: do not defame yourselves) nor revile one another by nicknames. Miserable is the name, evident immorality, after belief! And whoever does not repent, then those are they who are the unjust.
— Dr. Ghali
O you who have believed, let not a people ridicule [another] people; perhaps they may be better than them; nor let women ridicule [other] women; perhaps they may be better than them. And do not insult one another and do not call each other by [offensive] nicknames. Wretched is the name [i.e., mention] of disobedience after [one's] faith. And whoever does not repent - then it is those who are the wrongdoers.
— Saheeh International