Leviticus 18:17 prohibits uncovering the nakedness of a woman and her daughter — the exact sin that Leviticus 20:14 later punishes with burning.

Leviticus 21:9 also prescribes burning for a priest's daughter who prostitutes — the same penalty as here for marrying mother and daughter.

Deuteronomy 27:23 curses anyone who lies with his mother-in-law — a related but distinct offense from marrying both a woman and her mother here.