Reference for Zevachim 47:2

ולמאן דאמר מלמדין שתויי יין הוה ליה שלישי ושלשה לד"ה אין מלמדין:

ONE STANDING ON UTENSILS OR ON AN ANIMAL OR ON HIS FELLOW'S FEET, [THE SACRIFICES] ARE INVALID. Whence do we know it? - For the school of R'Ishmael taught: Since the pavement sanctifies<span class="x" onmousemove="('comment',' The priest, in that he may sacrifice there only, and not elsewhere. But v. next note.');">²</span>

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