Reference for Chullin 247:66

זמנין אשכחיה דיתיב וקאמר לה אסיפא

Said [R'Ammi] to him, 'And even if R'Nahman is the son-in-law of the Exilarch shall he make light of the teaching of R'Johanan? ' On another occasion he [R'Oshaia] found him [R'Ammi] sitting and expounding it<span class="x" onmousemove="('comment',' Sc. the above statement of R. Johanan.');"><sup>32</sup></span>