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R. Uzziel on Rejecting All Karaites (5 Iyar)
שו"ת משפטי עוזיאל יורה דעה ב:סג-סד 5 Iyar 5709 (1949)
Discussing the tradition that we do not accept Karaite converts, no matter how sincere, and consider them all possible mamzeirim (halachically illegitimate).
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