Parashas Metzora · Passuk 14:21
Chabad.org — English translation + Rashi
Torah Temima points to Menachos 89a (verified on the daf).
E-Daf.com — Tsurras Hadaf (size=3)
HebrewBooks / Shas PDF of the daf
English: “And one-tenth of fine flour” — this teaches that an isaron requires a log of oil.
Measure of oil
Chazal derive that the standard isaron of flour is accompanied by a full log of oil.