Musar for Shabbat 232:9
אמר רב חסדא אמר מר עוקבא מאי אהדרו ליה חברייא לרבי ישמעאל בנו של רבי יוחנן בן ברוקה הכי קאמרי ליה אם מצילין תיק הספר עם הספר לא נפשיט את הפסח מעורו מי דמי התם טלטול הכא מלאכה אמר רב אשי בתרתי פליגי פליגי בטלטול ופליגי במלאכה והכי קאמרי ליה אם מצילין תיק הספר עם הספר לא נטלטל עור אגב בשר
Now R. Ishmael son of R. Johanan b. Berokah, how does he dispose of this [verse], 'The Lord hath made every thing for his own purpose'? — [That teaches] that one must not draw out the emurim<span class="x" onmousemove="('comment',' V. n. 1. ');"><sup>25</sup></span> before the stripping of the skin.<span class="x" onmousemove="('comment',' As far as the breast. ');"><sup>26</sup></span> What is the reason? — Said R. Huna son of R. Nathan: On account of the threads.<span class="x" onmousemove="('comment',' Of wool, which would otherwise adhere to the fats, etc. ');"><sup>27</sup></span> R. Hisda observed in Mar 'Ukba's name: What did his companions answer to R. Ishmael son of R. Johanan b. Berokah? They argued thus with him: If the sheath of a Scroll may be rescued together with the Scroll, shall we then not flay the Passover sacrifice of its skin?<span class="x" onmousemove="('comment',' Surely the two are identical, for the sheath too is not sacred, just as the flaying of the skin after the breast has been reached serves a secular purpose only. ');"><sup>28</sup></span> How compare! There it is [mere] handling, whereas here it is work.<span class="x" onmousemove="('comment',' Flaying being a principal labour, v. supra 73a. ');"><sup>29</sup></span> — Said R. Ashi, They differ in two things, viz., in respect of both handling and labour, and they argue thus with him: If the sheath of a Scroll may be saved together with the Scroll, shall we not handle the skin on account of the flesh.<span class="x" onmousemove="('comment',' Rashi: R. Ishmael holding that once the emurim have been drawn out the animal may not be handled because of the skin, while the Rabbis argue that on the contrary since the flesh itself might be handled the skin may be likewise in virtue thereof. According to this they differ where the animal has only been partially flayed. Tosaf. interprets the passage differently. ');"><sup>30</sup></span>