Reference for Zevachim 124:7

ותנא מייתי לה מהכא דתניא רבי יהודה אומר (יחזקאל מג, יז) ומעלותיהו פנות קדים כל פינות שאתה פונה לא יהו אלא דרך ימין למזרח

But surely that is required [to teach] that it must be square? - Is then meruba' written?<span class="x" onmousemove="('comment',' Which definitely means square and nothing else.');">¹⁷</span> And on your reasoning, is then rabuz written?<span class="x" onmousemove="('comment',' Which equally means lying down and nothing else.');">¹⁸</span> Rather, rabua' is written, which implies both,<span class="x" onmousemove="('comment',' Square and lying down.');">¹⁹</span>

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