11th Ayah from Surah Al Hujurat
Sahih International
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 of disobedience after [one's] faith. And whoever does not repent - then it is those who are the wrongdoers.
Abdul Haleem
Believers, no one group of men should jeer at another, who may after all be better than them; no one group of women should jeer at another, who may after all be better than them; do not speak ill of one another; do not use offensive nicknames for one another. How bad it is to be called a mischief-maker after accepting faith! Those who do not repent of this behaviour are evildoers.
Mohsin Khan/Hilali
O you who believe! Let not a group scoff at another group, it may be that the latter are better than the former; nor let (some) women scoff at other women, it may be that the latter are better than the former, nor defame one another, nor insult one another by nicknames. How bad is it, to insult one's brother after having Faith [i.e. to call your Muslim brother (a faithful believer) as: "O sinner", or "O wicked", etc.]. And whosoever does not repent, then such are indeed Zalimun (wrong-doers, etc.).
Taqi Usmani
O you who believe, no men should ever scoff at other men. May be, the latter are better than the former. Nor should women (ever scoff) at other women. May be, the latter women are better than the former ones. And do not find fault with one another, nor call one another with bad nicknames. Bad is the name of sinfulness after embracing Faith. If anyone does not repent, then such people are the wrongdoers.
Pickthall
O ye who believe! Let not a folk deride a folk who may be better than they (are), not let women (deride) women who may be better than they are; neither defame one another, nor insult one another by nicknames. Bad is the name of lewdness after faith. And whoso turneth not in repentance, such are evil-doers.
Pickthall
O ye who believe! Let not some men among you laugh at others: It may be that the (latter) are better than the (former): Nor let some women laugh at others: It may be that the (latter are better than the (former): Nor defame nor be sarcastic to each other, nor call each other by (offensive) nicknames: Ill-seeming is a name connoting wickedness, (to be used of one) after he has believed: And those who do not desist are (indeed) doing wrong.