Reference for Yoma 97:17

אמר ליה רב הונא בריה דרב יהושע לרב פפא אדרבה אי חופן וחוזר וחופן לא יכנס אחר בחפינתו אי אפשר שלא יחסר ושלא יותיר ואי אין חופן חוזר וחופן תיבעי לך

-Rather, this is what he said: Our question is like one of the former generation.<span class="x" onmousemove="('comment',' He said to his pupils: This question of yours has been already asked by older scholars than you, viz., R. Joshua b. Levi, and it remained unsolved.');">²⁰</span> But did R'Hanina express such a view?<span class="x" onmousemove="('comment',' Did he himself doubt as to whether the high priest may enter the Holy of Holies with the handfuls of incense that had been taken by someone else.');">²¹</span>

Jastrow