Reference for Menachot 177:19

מאן דאמר ממטה למעלה שיערו התורה חסה על ממונן של ישראל ומאן דאמר ממעלה למטה שיערו אין עניות במקום עשירות:

And for what exposition do the Rabbis require the words 'For a meal-offering and a log of oil'? - They need them to teach that whosoever makes a freewill-offering of a meal-offering shall bring nothing less than the quantity for which one log of oil is prescribed, and that is, on tenth. And the others?<span class="x" onmousemove="('comment',' Do not R. Nehemiah and R. Eliezer b. Jacob agree that the verse is required for this last teaching; how then can they interpret the verse otherwise so as to derive therefrom their ruling that only one log is required for the meal-offering, no matter how large it is?');">¹⁵</span>

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