Midrash for Chullin 99:1

ולדידן מיסתם נמי לא סתים

surely for us [Babylonians] it should at least be effective to stop up a perforation!<span class="x" onmousemove="('comment',' This remark of R. Nahman indicates that Bar Himza, which, as stated above, is effective to stop up a perforation, must be the fat which is upon the lesser curvature of the abomasum. For, as immediately follows in the text, it is only this fat (sc. that upon the lesser curvature) which the Palestinians permit themselves to eat and which R. Nahman maintains should at least serve for us to stop up a perforation. The second version in the text (infra) has no bearing upon this remark of R. Nahman. V. Rashi.');">¹</span>

Sifrei Devarim