Prov 6:20-35: "My son, keep the laws of thy father, and reject not the ordinances of thy mother: but bind them upon thy soul continually, and hang them as a chain about thy neck. Whensoever thou walkest, lead this along and let it be with thee; that it may talk with thee when thou wakest. For the commandment of the law is a lamp and a light; a way of life; reproof also and correction: to keep thee continually from a married woman, and from the calumny of a strange tongue. Let not the desire of beauty overcome thee, neither be thou caught by thine eyes, neither be captivated with her eyelids. For the value of a harlot is as much as of one loaf; and a woman hunts for the precious souls of men. Shall any one bind fire in his bosom, and not burn his garments? or will any one walk on coals of fire, and not burn his feet? So is he that goes in to a married woman; he shall not be held guiltless, neither any one that touches her. It is not to be wondered at if one should be taken stealing, for he steals that when hungry he may satisfy his soul: but if he should be taken, he shall repay sevenfold, and shall deliver himself by giving all his goods. But the adulterer through want of sense procures destruction to his soul. He endures both pain and disgrace, and his reproach shall never be wiped off. For the soul of her husband is full of jealousy: he will not spare in the day of vengeance. He will not forego his enmity for any ransom: neither will he be reconciled for many gifts."
Do not defraud your brother. The Lord makes it clear that you already have what's coming to you, if you do.