עֶרְוַ֤ת בַּת־בִּנְךָ֙ א֣וֹ בַֽת־בִּתְּךָ֔ לֹ֥א תְגַלֶּ֖ה עֶרְוָתָ֑ן כִּ֥י עֶרְוָתְךָ֖ הֵֽנָּה׃ (ס)
The nakedness of thy son’s daughter, or of thy daughter’s daughter, even their nakedness thou shalt not uncover; for theirs is thine own nakedness.
Targum Jonathan on Leviticus
The nakedness of thy son's daughter, or the daughter of thy daughter, thou shalt not dishonour, because they are as thy own nakedness.