Although he retained his seat in the 1973 elections, he resigned from the Knesset on 23 November 1975, and was replaced by Shlomo-Ya'akov Gross. He returned to the Knesset following the 1977 elections, and was re-elected in 1981 and 1984. The same year, Porush defied the Gerrer Rebbe and Council of Torah Sages, who demanded he give up his Knesset seat. In response, dozens of Gerrer Hasidim stormed into his hotel, beat him up and destroyed the place. He commented that the event reminded him of the 1929 riots.