Reference for Bekhorot 63:2

ואף רב שמואל בר רב יצחק סבר לה להא דרבא

the Rabbis did not prohibit;<span class="x" onmousemove="('comment',' The value of the animal being not on account of these things, disposing of them indirectly is permissible even in the case of an adult.');">²</span>

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