פירוש על עבודה זרה 32:11

When R. Zera gets to Israel (if you learned Ketubot, you might remember that at the end of the masechet he makes Aliyah) he hears the statement attributed by a different amora to Rav. He asks R. Assi if this is indeed the correct transmission.

Assi insults R. Zera in return for his doubts about the attribution of the statement and then orders him to transmit it the way that R. Assi does.