Commentary for Kiddushin 127:6
והרי בידו להשיאה לממזר כרבי עקיבא דאמר אין קדושין תופסין בחייבי לאוין
Daf Shevui to Kiddushin
An Israelite woman who has sex with a mamzer is disqualified from marrying a priest. So the father could give her in marriage to a mamzer and thereby disqualify her from the priesthood.
The Talmud answers that the mishnah accords with R. Akiva who holds that marriage cannot be contracted between two people prohibited by a negative commandment such as that which prohibits a mamzer from marrying an Israelite woman. Most other tannaim hold that while it is prohibited for a mamzer to marry an Israelite, should the marriage occur, it is valid.
The Talmud answers that the mishnah accords with R. Akiva who holds that marriage cannot be contracted between two people prohibited by a negative commandment such as that which prohibits a mamzer from marrying an Israelite woman. Most other tannaim hold that while it is prohibited for a mamzer to marry an Israelite, should the marriage occur, it is valid.
Ask RabbiBookmarkShareCopy