Reference for Chullin 271:6

אלא טעמא דכתב רחמנא מאת זובחי הזבח הא לאו הכי הוה אמינא

and by reason of the common expression 'giving'<span class="x" onmousemove="('comment',' Used here and also in connection with the first of the fleece: shalt thou give him (ibid. 4) .');">⁵</span>

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