"The soul and body of man are united in this way: When a woman has conceived, the Angel of the Night, Lailah, carries the sperm before God, and God decrees what manner of human being shall become of it--whether it shall be male or female, strong or weak, rich or poor, beautiful or ugly, long or short, fat or thin, and what all its other qualities shall be. Piety and wickedness alone are left to the determination of man himself."