Reference for Rosh Hashanah 27:5

ולשמעינן הני תרתי לכל אין בילה למה לי הא קמ"ל דליין ושמן יש בילה

[But if so], let him indicate [only] these two points; why does he tell us that mixing is not i all cases to be relied on? - His object is to tell us that for wine and oil mixing is to be relied on. It has been taught: R'Jose the Galilean says: After that thou hast gathered in from thy threshing-floor and from thy wine press:<span class="x" onmousemove="('comment',' Deut. XVI, 13.');">⁶</span>

Jastrow