Deuteronomy 20
6 Ref Or if any man has made a vine-garden without taking the first-fruits of it, let him go back to his house, so that in the event of his death in the fight, another may not be the first to make use of the fruit.
7 Ref Or if any man is newly married and has had no sex relations with his wife, let him go back to his house, so that in the event of his death in the fight, another man may not take her.