Reference for Sanhedrin 151:14

בתו מאנוסתו מנין האמר אביי ק"ו על בת בתו ענוש על בתו לא כל שכן

Whence do we know that his daughter by a seduced woman [not his wife] is forbidden him?<span class="x" onmousemove="('comment',' As explained by Abaye supra 75b. q.v. The difficulty arises because in Lev. XVIII, 10 q.v., which has been interpreted as referring to his illegitimate offspring, no mention is made of his own daughter. ');">¹³</span>

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