Reference for Menachot 172:2

אף [כל] המנחות היו בדין [וכו']: תנו רבנן (שמות כז, כ) זך אין זך אלא נקי רבי יהודה אומר כתית אין כתית אלא כתוש

R'Judah says. [It is written,] Beaten; [and the expression] 'beaten' means nothing else but pounded.<span class="x" onmousemove="('comment',' Sc. in a mortar, but not ground in a mill.');">⁴</span> I might then think that this pounded oil is not valid for meal-offerings.<span class="x" onmousemove="('comment',' For Scripture expressly says. Beaten (i.e. pounded) for the light. but for no other purpose.');">⁵</span>

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