Reference for Yevamot 153:12
כ"ג יוכיח וחזר הדין
whence [it may he asked] is this distinction<span class="x" onmousemove="('comment',' Between an Ammonite's daughter who, as a female, is not included in the prohibition, and the daughter of any other people. What proof is there that a father's status deprives a daughter of her rights? ');"><sup>44</sup></span> [inferred]! — It is inferred from the case of a High Priest who married a widow.<span class="x" onmousemove="('comment',' As the daughter of a High Priest who is forbidden to marry a widow, is ineligible to marry a priest, so is the daughter of an Ammonite proselyte. ');"><sup>45</sup></span> [But it may be objected] the marriage between a High Priest and a widow is different, since his cohabitation constitutes a transgression!<span class="x" onmousemove="('comment',' The marriage between an Ammonite and an Ammonitess, however, is no transgression. ');"><sup>46</sup></span> — [Then the case of the] <i>halal</i> proves it?<span class="x" onmousemove="('comment',' The marriage by a halal (v. Glos.) of the daughter of an Israelite constituting no transgression, and yet his daughter is ineligible to marry a priest. ');"><sup>47</sup></span>