Reference for Menachot 151:7

מסתברא מלחמי תודה הוה ליה למילף שכן יחיד המתנדב שמן נפסל שלא בשבת ושלא בטומאה

R'JOSE SAYS, TO THE DOUGH. The question was asked: Does [R'Jose] mean to the dough and not to the grains of wheat; or does he mean to the dough too? -Come and hear, for it was taught: The rubbing and the beating apply to the grains of wheat.

Jastrow