‘Amr ibn Shu’aib related from his father, who related from his grandfather, who related that the Prophet (SAW) said: I have been given the strength of forty in aggression and marital relations; and there is no believer that has not been given the strength of ten. Sex drive was made of ten portions; nine portions of it were made in women, and one in men. And were it not for the modesty that has been cast over women with their sex drives, every man would have nine highly aroused women.