Deuteronomy 24:1-2

Darby Translation

24 When a man taketh a wife, and marrieth her, it shall be if she find no favour in his eyes, because he hath found some unseemly thing in her, that he shall write her a letter of divorce, and give it into her hand, and send her out of his house.

² And she shall depart out of his house, and go away, and may become another man's wife.