Reference for Kiddushin 155:18

מה להצד השוה שבהן שכן פוסלים בביאתם ורבי יהודה גר נמי פוסל בביאתו ומייתי לה במה הצד מהאי דינא

[yet] his daughter is unfit;<span class="x" onmousemove="('comment',' For the priesthood.');">²⁴</span> then a proselyte, who comes from an unfit origin, his daughter is surely unfit! As for a halal, [it may be argued,] that is because his own formation is in sin!<span class="x" onmousemove="('comment',' Being the issue of a forbidden union.');">²⁵</span>

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