Reference for Chullin 50:7

מאי בינייהו

What practical difference is there between them? - Bone vessels.<span class="x" onmousemove="('comment',' These are expensive but are not used on special occasions of honour; consequently, according to R. Johanan unfinished bone vessels can be rendered unclean, but according to R. Nahman they cannot.');">⁵</span>

Jastrow

Jastrow