Reference for Bekhorot 105:29

אי הכי בכור נמי לא ליקדש

If this be the case, the same prohibition should have applied originally [when the Temple was standing]?<span class="x" onmousemove="('comment',' That even when there was a Temple there should be no tithing of animals, in case an orphaned animal enters the shed for tithing.');">¹⁹</span>

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