Quotation for Shabbat 214:9
איכא דמתני לה אהא המפיס מורסא בשבת אם לעשות לה פה חייב אם להוציא ממנה לחה פטור מאן תנא אמר רב יהודה אמר רב ר' שמעון היא דאמר מלאכה שאין צריכה לגופה פטור עליה
<a name="E6a"></a> BUT OTHER ABOMINATIONS, etc. But if one kills them, he is culpable: which Tanna [holds thus]? Said R. Jeremiah, It is R. Eliezer. For it was taught, R. Eliezer said: He who kills vermin on the Sabbath is as though he killed a camel on the Sabbath. R. Joseph demurred to this: The Rabbis disagree with R. Eliezer only in respect to vermin, which does not multiply and increase, but as for other abominations and creeping things, which multiply and increase, they do not differ [therein]. And both learn it from none but the rams.<span class="x" onmousemove="('comment',' Which were killed for the sake of their skins, which were dyed red and used in the Tabernacle. Thus killing was a labour of importance in the Tabernacle, and hence ranks as a principal labour; v. supra 49b. ');"><sup>16</sup></span>