Reference for Yoma 80:11

שיכול והלא דין הוא ומה במקום שלא קידש הגורל קידש השם מקום שקידש הגורל אינו דין שיקדש השם

hence we learn that the casting is indispensable, and the placing of the lot [upon the head] is dispensable.<span class="x" onmousemove="('comment',' A refutation of R. Johanan.');">¹⁴</span> Raba said: This is what he means: If it had said: 'Upon which it is', I would have said: let him leave it there until the time for the slaughtering; therefore it says: [upon which it] fell, intimate that once it had fallen upon it, it needs nothing else.<span class="x" onmousemove="('comment',' The verse serves to indicate that once it 'fell upon it' there is not even a command to be placed there, as a sign or assurance that it will be offered up for the purpose designated.');">¹⁵</span>

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