Reference for Chullin 228:4

מקום שנאסר פרי עם פרי בבשול אינו דין שנאסר פרי עם האם בבשול

- as in the case of cooking - is the fruit forbidden with the dam!<span class="x" onmousemove="('comment',' I.e., the kid in its own milk; in this case the milk of the kid is regarded as its fruit.');">³</span>

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