Responsa for Bekhorot 47:38
מה סיפא ודאי דידה אף רישא ודאי דידה
so the first part also refers to a case where [the offspring] is certainly its own?<span class="x" onmousemove="('comment',' And therefore with reference to the prohibition of killing the mother and the young on the same day. there is the liability of lashes, for we presume that it is certainly the animal's offspring.');"><sup>21</sup></span>
Teshuvot Maharam
Q. A bought from a Gentile a cow that already was yielding milk. Should the cow bear a male calf in A's house, would such calf be unfit for eating purposes for fear lest it be a firstling?
A. The fact that a cow yields milk is no proof that she has already given birth to a calf, for it sometimes happens, though very rarely, that a cow yields milk even though she has not as yet given birth.
SOURCES: Cr. 312; L. 187; Orhot Hayyim p. 21. Cf. Moses, Minz, Responsa 34; ibid. 35; Terumat Hadeshen 271; Isserlein, Pesakim 129; ibid. 167.
A. The fact that a cow yields milk is no proof that she has already given birth to a calf, for it sometimes happens, though very rarely, that a cow yields milk even though she has not as yet given birth.
SOURCES: Cr. 312; L. 187; Orhot Hayyim p. 21. Cf. Moses, Minz, Responsa 34; ibid. 35; Terumat Hadeshen 271; Isserlein, Pesakim 129; ibid. 167.
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