Reference for Chullin 59:26

ואף ר"ש בן לקיש סבר

And should you say that [in order to sell a consecrated animal] it must be placed<span class="x" onmousemove="('comment',' This rule is derived from Lev. XXVII, 11 and 12. The implication is that the animal must be able to stand, i.e., living, when it is being valued by the priest. ib,vu');">¹⁹</span>

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