Deuteronomy 24:2-4

2and she leaves his house and goes and becomes another man’s wife, 3and if the latter husband 1turns against her and writes her a certificate of divorce and puts it in her hand and sends her out of his house, or if the latter husband dies who took her to be his wife, 4then her 2former husband who sent her away is not allowed to take her again to be his wife, since she has been defiled; for that is an abomination before the Lord, and you shall not bring sin on the land which the Lord your God gives you as an inheritance.