Ye are also forbidden to take to wife free women who are married, except those women whom your right hands shall possess as slaves. This is ordained you from God. Whatever is beside this, is allowed you; that ye may with your substance provide wives for your selves, acting that which is right, and avoiding whoredom. And for the advantage which ye receive from them, give them their reward, according to what is ordained: But it shall be no crime in you to make any other agreement among your selves, after the ordinance shall be complied with; for God is knowing and wise.