Midrash for Pesachim 71:12

ואיבעית אימא לעולם בחלבא כדאמר רבינא כעין תורא שרי הכא נמי כעין תורא:

Now R'Akiba related: I was staying [one Passover] with R'Eliezer and R'Joshua, and I kneaded dough for them with wine, oil or honey, and they said nothing to me. And though one may not knead, yet one may smooth the surface with them, - this is according to the first Tanna.

Sifrei Devarim