Reference for Menachot 12:9
מאי שנא שמאל דאשכחן לה הכשירא ביום הכפורים זר נמי אשכחן לה הכשירא בשחיטה
He surely should have said, He should bring other flour from his house to make up [the tenth] and then take out the handful with the right hand! - Rather we must say that Rab said so according to Ben Bathyra.<span class="x" onmousemove="('comment',' I.e., Rab interpreted Ben Bathyra's ruling to apply not only to the case where the handful was taken out with the left hand but also to all the preceding cases enumerated in the Mishnah where the handful was taken out by a person unfit.');"><sup>9</sup></span> But is not this obvious? - [No, for] one might have thought that Ben Bathyra declared it valid only [in the case where the handful was taken out] with the left hand, but not where it was taken out by any of the persons that are unfit;<span class="x" onmousemove="('comment',' Lit., 'the other (cases of) unfit persons'.');"><sup>10</sup></span>