Leviticus 18:12-13

18:12 You must not have sexual intercourse with your father’s sister; she is your father’s flesh. ¹  18:13 You must not have sexual intercourse with your mother’s sister, because she is your mother’s flesh.

[18:12]  ¹ tc A few medieval Hebrew mss, the LXX, Syriac, and Vulgate all read “because she is the flesh of your father,” like the MT of v. 13.