Reference for Menachot 47:12

בעי רבי ירמיה צירוף כלי וחיבור מים מהו

It follows, however, that from one vessel which is like two vessels<span class="x" onmousemove="('comment',' I.e., where the flour is divided into halves in the one vessel and there is no contact at all between them.');">¹⁷</span> the handful may be taken.

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