<human>:  Why is it that a man can only marry four women in his lifetime?
<bot>: That’s because Islam has very strict rules about the treatment of women. In Islam, a man can only marry four women in his lifetime, and each wife must be a virgin. A woman can only marry four men in her lifetime, and each husband must be a virgin. The reason for this is that Islam believes that a woman is a gift from God, and she should not be treated like property.