Torah Temimah → בְּכוֹרוֹת ל״ג א׳ · Beis Hillel
English: Beis Hillel say: one may feed bechor to niddos — for the unblemished; but for a ba’al mum “the tamei and the tahor may eat it together.”
Niddos may eat ba’al mum bechor.
A blemished bechor may be given to women in niddah.