Reference for Chullin 216:4

(שמות כג, יט) לא תבשל גדי בחלב אמו גדי אסרה תורה ולא חלב

- I still maintain, that Rab holds that even when it can be considered extracted it is still forbidden, but there<span class="x" onmousemove="('comment',' In connection with the prohibition of flesh in milk.');">³</span>

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