Reference for Menachot 194:17

וכי תימא שית מינייהו מעיקרא באמה בת חמשה מייתי להו אם כן רווחא לה עזרה

And further we have learnt: It rose up five cubits and receded one cubit: this formed the sobeb; thus there were left twenty-eight cubits by twenty-eight.<span class="x" onmousemove="('comment',' Mid. III, 1.');">²⁰</span> According to you, however, it should be twenty-eight cubits and four handbreadths by twenty-eight cubits and four handbreadths! And should you say that since they<span class="x" onmousemove="('comment',' The four additional handbreadths.');">²²</span>

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