Talmud (Rodkinson Edition) — Book 1…
“ The master said: "All three are not culpable." Would this not be an objection to Rabha, who said if one transfer an object (in public ground) from one to the other limit of four spans, even if he moves it over his head (i.e., above ten spans from the ground) , he is culpable? In the above-mentioned case, however, he is not.Anonymous teachers say "a door-step," etc. Is such the case even if there is no side-beam to it? Has not R. Hamma bar Gorion in the name of Rabh said that if it is inside the door, and not even four spans square, there must still be a side-beam to make it a free place? ”
