And my opposition to him was with a poem, including my saying: "The truth is white, leave the words of a people who have opposed and become arrogant with arrogance." And Al-Safaa also said: From Rajaz And Kamil From Basit: They said, "You love them secretly," so I said to them, "The color of the fava bean, the color of musk, and the eye." And I mistook the whiteness of eggs by mistake, for indeed, from gray hair and pallor, and above. And some of them went to extremes in praising whiteness and condemning blackness with lengthy words, and said: "Whoever opposes this has been blinded by his stubbornness from God's saying: 'We made the night a sign, and We made the sign of the day visible, and to each is a direction to which it turns. And to people in what they desire are their inclinations.'" A chapter on the diseases of black women and foods, and the health of regions, hunting, and some animals. It is incumbent upon the servant to know that God has made every region green with what exists in its soil, and has made each tribe unique, not found elsewhere. Therefore, you find people moving from one country to another, their air being contrary to the air of their country, and they get illnesses. When the air changes for them, they get sick, and perhaps die. If they do not die, their illness is prolonged, and their bodies do not recover until they become accustomed to the air of the country they inhabit after a long time. And since matters are thus, children born from a father and mother, for example, from Furawin, have longer lives and stronger bodies.