[Avodah] Shimon bar yochai interpretation

[Meir Shinnar]

In the Steinsaltz gemara on shabbbat 33, discussing the episode of shimon bar yochai in the cave, that when he left the cave the first time and saw people working, and that everyone that they saw they burned, a footnote cites the bet yaakov with an allegorical interpretation - that  everyone that they saw they convinced to study torah lishma (and leave material pursuits).   Given that their efforts were met by a response that they were destroying the world, and therefore sent back to the cave, this response is of some interest ..
Does anyone know who this bet yaakov is?  He is not listed in the list of books that steinsaltz gives in the back of his gmara.

Meir Shinnar