Mujahid said: Indeed Iblis [the Devil] inserts his genitals into his own genitals, and lays five eggs, and this is the origin of his offspring; for it is said that Allah Most High created for him a penis on his right thigh and a vagina on his left, and he has relations in the one with the other, and ten eggs come from him every day, and from each egg seventy devils and she-devils.