Reference for Zevachim 169:7

הרי פסח דקדשים קלים הוא תרגמא בשלא לשמן

Hence [if they ascended] when slaughtered, they do not descend: surely that is so whether they are most sacred sacrifices or lesser sacrifices? - No: [deduce thus:] but if they are slaughtered, some of these must descend,<span class="x" onmousemove="('comment',' Sc. lesser sacrifices.');">⁷</span> and some do not descend.

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