Surah 49. Al-Hujurat, Ayah 13

I.e., "We have created every one of you out of a father and a mother" (Zamakhshari, Razi, Baydawi) - implying that this equality of biological origin is reflected in the equality of the human dignity common to all.

I.e., know that all belong to one human family, without any inherent s uperiority of one over another (Zamakhshari). This connects with the exhortation, in the preceding two verses, to respect and safeguard each other's dignity. In other words, men's evolution into "nations and tribes" is meant to foster rather than to diminish their mutual desire to understand and appreciate the essential human oneness underlying their outward differentiations; and, correspondingly, all racial, national or tribal prejudice ('asabiyyah) is condemned - implicitly in the Qur'an, and most explicitly by the Prophet (see second half of note [15] on 28:15 ). In addition, speaking of people's boasting of their national or tribal past, the Prophet said: "Behold, God has removed from you the arrogance of pagan ignorance (jahiliyyah) with its boast of ancestral glories. Man is but a God-conscious believer or an unfortunate sinner. All people are children of Adam, and Adam was created out of dust." (Fragment of a hadith quoted by Tirmidhi and Abu Da'ud, on the authority of Abu Hurayrah.)

 The Prophet (ﷺ) is reported in a ḥadîth collected by Imâm Aḥmed to have said, "O humanity! Your Lord is one, and your ancestry is one. No Arab is superior to a non-Arab, nor is any non-Arab superior to any Arab. No white is superior to any black, nor is any black superior to any white except on account of their righteousness."

This is addressed to all mankind and not only to the Muslim brotherhood, though it is understood that in a perfected world the two would be synonymous. As it is, mankind is descended from one pair of parents. Their tribes, races, and nations are convenient labels by which we may know certain differing characteristics. Before Allah they are all one, and he gets most honour who is most righteous.