Reference for Menachot 12:16

אלא טעמא דאשמעינן רב הא לאו הכי הוה אמינא בשאר פסולין פסל בן בתירא והתניא רבי יוסי ברבי יהודה ורבי אלעזר בר"ש אומרים מכשיר היה בן בתירא בכל הפסולין כולן

Should you say, however, that we cannot prove it from the case of the high place;<span class="x" onmousemove="('comment',' Since at that time Aaron and his sons had not yet been consecrated for service; so that one cannot infer from the conditions prevailing at the high places that a non-priest may perform a service.');">¹⁸</span> but surely it has been taught: Whence do we know that [sacrificial portions] which had been taken out [of the Sanctuary], if brought up upon the altar must not come down again?<span class="x" onmousemove="('comment',' V. Zeb. 84a.');">¹⁹</span>

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