Reference for Shabbat 266:11

ת"ר מהלקטין את המילה ואם לא הילקט ענוש כרת מני א"ר כהנא אומן

while those who carried [them] out stood in the south facing the north:<span class="x" onmousemove="('comment',' I.e., opposite the other priests across the Table. ');">²⁰</span> these withdrew [the old] and these laid down [the new], the handbreadth of one at the side of the handbreadth of the other,<span class="x" onmousemove="('comment',' I.e., the withdrawing and the replacing were almost simultaneous. ');">²¹</span>

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