Quran:
The believers are but brothers, so make settlement between your brothers. And fear Allah that you may receive mercy.
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.
O you who have believed, avoid much [negative] assumption. Indeed, some assumption is sin. And do not spy or backbite each other. Would one of you like to eat the flesh of his brother when dead? You would detest it. And fear Allah ; indeed, Allah is Accepting of repentance and Merciful.
"O Mankind, We created you from a single (pair) of a male and a female and made you into nations and tribes, that you may know each other. Verily the most honored of you in the sight of God is he who is the most righteous of you" (Quran 49:10-13).
Sheikh Ahmad Deedat:
"Whosoever will resort to the distinction of colour and blood will perish. Whoever you are, a majestic Turk or a blue-blooded Arab, this is the law of God, you discriminate on grounds of race, language, colour and riches, you will perish"