פירוש על קידושין 52:11

In this story, Rabban Gamaliel wants to eat his produce but tithe it by setting aside produce not on the ship. This way he can eat all the food on the ship. He declares that the first tithe will go to R. Joshua (who is a Levite) and the poor tithe will go to Akiva b. Joseph, who is poor. To transfer them the produce, he rents the space to them so that they can acquire it. This seems to prove that to transfer movables, the movables must be on the land being transferred.
The Talmud rejects the proof. He might have rented them this property just so they could leave the tithes there for a while.
The discussion will continue tomorrow.