Reference for Pesachim 129:1

ועולה גופה מנלן אמר קרא (ויקרא ד, ז) אל יסוד מזבח העולה אלמא עולה טעונה יסוד:

And how do we know it of the burnt-offering itself? - Scripture saith, at the base of the altar of the burnt-offering:<span class="x" onmousemove="('comment',' Lev. IV, 7.');">¹</span> this proves that the burnt-offering requires [sprinkling at] the base.<span class="x" onmousemove="('comment',' For in fact the altar was not used for the burnt-offering exclusively, the very sentence quoted treating of a sin-offering. Hence the verse must mean, at the base of the altar, as is done with the burnt-offering.');">²</span>

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