The story is told of a certain alley by the home of Eibut b. Ihi. He put up a side-post in the alley to define it as a private space. This met with the approval of Samuel. But when the master died, R. Anan came by and tore down the side-post.
This, you can imagine, was not a very popular move. At least from the perspective of Eibuth b. Ihi:
I have been living undisturbed in this alley on the authority of Samuel, why should R. Anan b. Rab now come and throw its side-post down!
Well you might ask.
It turned out that there was a synagogue next to the alley and they shared a courtyard. The superintendent of the synagogue (hazna – hazan?) used to take his meals at home and sleep in the synagogue at night, a practice he discontinued when Samuel died. Eibuth b. Ihi understood the side-post to be in allowed because sleeping in a place constituted dwelling. R. Anan b. Rab disagreed.
Tear it down!