Reference for Bava Batra 44:4

אמר רבי יוסי בר חנינא ולא פליגי הא בעיר ישנה הא בעיר חדשה

but [if] the wall [is that] of a courtyard, he may bring [his wall] as close to it as he likes. R. Oshiah, however, said: It makes no difference whether it is a vegetable garden or a courtyard. he must not bring his wall closer to it than four cubits. R. Jose b. Hanina says: There is no conflict between Rab and R. Oshiah; the former speaks of [a courtyard in] an old town<span class="x" onmousemove="('comment',' Where the ground has already been well trodden. ');">⁴</span>

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow

Jastrow