Tafsir of Ar-Rum 30:22

Allah said:

ومن آياته

And among His signs, indicating His magnificent power.

خلق السماوات واﻻرض

is the creation of the heavens and the earth, The heavens with their vast height and brightness and beauty of the stars and planets, and the earth with its density and its mountains, valleys, seas, plains, animals and trees.

واختﻼف ألسنتكم وألوانكم

and the difference of your languages and colors, So, we see that some speak Arabic, and the Tatars have their own language, as do the Georgians, Romans, Franks, Berbers, Tou Couleurs (of Sudan), Ethiopians, Indians, Persians, Slavs, Khazars, Armenians, Kurds and others. Only Allah knows the variety of languages spoken among the sons of Adam. And the difference of their colors mentioned here refers to their appearance, for all the people of this world, from the time that Allah created Adam, and until the Hour begins, each of them has two eyes, two eyebrows, a nose, a forehead, a mouth and two cheeks, but none of them looks like another; there is bound to be some difference in posture, appearance and speech, whether it is apparent or is hidden and can only be noticed with careful observation. Each face has its own characteristics and does not look like another; even if there was a group of people who looked alike, having a beautiful or ugly characteristic in common, there would still be a difference between one person and the next.

إن في ذلك ﻻيات للعالمين

Verily, in that are indeed signs for men of sound knowledge