Midrash for Chullin 126:2
אלא ש"מ
You must therefore hold that the ra'ah and the da'ah are one and the same.
Sifrei Devarim
And we are taught that the unclean beasts (and animals) are more numerous than the clean ones; for in all places Scripture specifies the lesser, viz. (Devarim, Ibid.) "This is the beast that you may eat … (5) the hart, the gazelle, and the fallow deer."
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