Reference for Bava Batra 170:9

ומאי פסקא סתמא דמילתא בי מוכר מאני דמוכר שכיחי בי לוקח מאני דלוקח שכיחי

Raba said come and hear: [It has been taught:]<span class="x" onmousemove="('comment',' A.Z. 72a., ');">²¹</span> [If] he has pulled his<span class="x" onmousemove="('comment',' I.e., the seller's. Others change the pronominal suffix of [H] and of [H] into final Nun, 'ass drivers and labourers'. (V. Tosaf. s.v. [H] a.l.). ');">²²</span> ass drivers [who pulled with them their asses], or his<span class="x" onmousemove="('comment',' I.e., the seller's. Others change the pronominal suffix of [H] and of [H] into final Nun, 'ass drivers and labourers'. (V. Tosaf. s.v. [H] a.l.). ');">²²</span>

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