One of the sons of Nūḥ is the father of the African race
that he mentioned the statement of Allah ﷻ "We sent Nūḥ to his nation... (Nūḥ 71:1)" then mentioned that Nūḥ took a bath and saw his son looking at him. He then said, "You're looking at me while I'm taking a bath? May Allah discolor you." ˹Ibn Masʿūd˺ said: he was then darkened and he is the father of Sūdān (the African race).
أَنَّهُ ذَكَرَ قَوْلَ اللَّهِ ﷻ {إِنَّا أَرْسَلْنَا نُوحًا إِلَى قَوْمِهِ} [نوح 1] فَذَكَرَ أَنَّ نُوحًا اغْتَسَلَ فَرَأَى ابْنَهُ يَنْظُرُ إِلَيْهِ فَقَالَ: تَنْظُرُ إِلَيَّ وَأَنَا أَغْتَسِلُ؟ خَارَ اللَّهُ لَوْنَكَ! قَالَ: فَاسْوَدَّ فَهُوَ أَبُو السُّودَانِ۔