Matthew Poole and continuators on Leviticus 18:11

11 The nakedness of thy fathers wives daughter, begotten of thy father , (she is thy sister) thou shalt not uncover her nakedness.

Or, being akin to thy father. He seems to speak of the daughter of the fathers brother by his wife, whom the father here spoken of, being brother to the deceased person, married by vertue of that law, Deut. 25. 5. by which marriage there was a near kindred contracted between the two families, so that the son of the one could not marry the daughter of the other. Thus this law is differing from that ver. 9. And that seems more probable, than that in so brief a table of laws the same thing should be forbidden both there and here. Obj. The word being the same here and ver. 9. must be understood in the same sence, and therefore here must be rendred begotten or born, as it is there. Ans. It may be rendred there as well as here, akin, as some render the words there, of domestick, or of another, a forreign, kindred: and if the word had been participially put for begotten or born, it is likely the preposition Mem or Lamed would have been prefixed to the Hebrew word, abicha, as is common in those cases.