Reference for Chullin 227:53

אין הכי נמי אלא בחלב אמו למה לי

But by this argument 'the older sister' can also be inferred from both together?<span class="x" onmousemove="('comment',' I.e., from an argument drawn from 'its mother' and from the cow (since the Tanna of this Baraitha is the identical Tanna of the first Baraitha in which it was shown that there is a verse expressly stated to include the cow and ewe) , so that no verse is required to teach the prohibition even in the case of 'the older sister' (Rashi) .');">²⁴</span>

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