Reference for Menachot 185:2

היורש סומך:

THE HEIR MAY LAY HIS HANDS. R'Hananiah recited the following teaching in the presence of Raba: The heir may not lay his hands [on his father's offering], and the heir cannot substitute [another animal for his father's offering].<span class="x" onmousemove="('comment',' I.e., if he did so it is of no effect.');">³</span>

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