Reference for Menachot 155:3
וכי דבר הלמד בהיקש חוזר ומלמד בהיקש הימנו ודבר אחר הוא וכל הימנו ודבר אחר לא הוי היקש
become the basis for another inference to be made from it again by a hekkesh?<span class="x" onmousemove="('comment',' Whereby it is sought to infer from the leavened cakes, by reason of the hekkesh implicit in vv. 12 and 13; that the unleavened cakes shall also consist of ten tenths. The rule is well established that in matters appertaining to sacrifice one may not draw an inference by a hekkesh from that which has itself been inferred by a hekkesh. V. Zeb. 49b.');"><sup>4</sup></span> -[The original rule was derived] from itself and [from] something else,<span class="x" onmousemove="('comment',' The original inference that the leavened cakes of the thank-offering shall consist of ten tenths, a tenth for every cake, was not entirely drawn from the case of the Two Loaves, inasmuch as the number of cakes, namely ten, is deemed to be expressly stated in connection with the leavened cakes of the thank-offering by virtue of the expression 'they shall be' (v. supra n. 3) . Accordingly the leavened cakes supplied the rule that there must be ten cakes (i.e., derived 'from itself') and the Two Loaves supplied the rule that there must be a tenth for each cake (i.e., derived 'from something else') ; the result obtained is therefore not regarded as one obtained entirely by a hekkesh.');"><sup>5</sup></span> and [any rule derived] from itself and [from] something