Reference for Menachot 166:11

וכולן אינן באין אלא מן המובחר ואיזהו מובחר שלהם מכניס וזטחא אלפא לסלת שנייה להן עפוריים בבקעה

<big><b>MISHNAH: </b></big>ALL THE OFFERINGS<span class="x" onmousemove="('comment',' Sc. meal-offerings.');">²⁰</span> OF THE CONGREGATION OR OF THE INDIVIDUAL MAY BE OFFERED FROM [PRODUCE GROWN] IN THE LAND [OF ISRAEL] OR OUTSIDE THE LAND, FROM THE NEW [PRODUCE] OR FROM THE OLD, EXCEPTING THE 'OMER-OFFERING AND THE TWO LOAVES, WHICH MUST BE OFFERED ONLY FROM THE NEW PRODUCE AND FROM [PRODUCE GROWN] IN THE LAND. ALL [OFFERINGS] MUST BE OFFERED FROM THE CHOICEST PRODUCE.

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