Reference for Bekhorot 6:43

<big><strong>מתני׳</strong></big> כהנים ולוים פטורין מק"ו

- [It was] lest he should be led to commit an offence.<span class="x" onmousemove="('comment',' In case he should shear and work the animal. And therefore he rendered himself exempt by transferring a part of the embryo to a heathen.');">²⁶</span>

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