When the Gemara says "Seifa Itztricha Leih" what is it referring to? The Cosel Chatzer Shenafal or the daled amos?
Yitzy Feldstein, Far Rockaway, US
The "Makshan" (questioner) in the Gemara understood that the Chiyuv to build the Kosel was even if it hadn't fallen down. The only reason that the Reisha mentioned about a Kosel which had fallen is to teach that even if it had existed previously, one cannot force the neighbor to rebuild above the height of four Amos.