Yehoshua Neuwirth

Yehoshua Yeshaya Neuwirth (15 February 1927 - 10 June 2013) was an eminent Orthodox Jewish rabbi and posek (halakhic authority) in Jerusalem, Israel. He was one of the primary and most renowned students of Rabbi Shlomo Zalman Auerbach and the author of a two-volume Hebrew language treatise, Shemirat Shabbat Kehilchatah (Hebrew: שמירת שבת כהלכתה‎)— translated into English as Shemirath Shabbath: A practical guide to the observance of Shabbath — a compendium of the laws of Shabbat which is viewed by many as an authoritative work regarding these laws. He was also the rosh yeshiva of the Prei Shmuel yeshiva ketana and Chochmas Shlomo yeshiva gedola in Jerusalem. He lived in the Bayit Vegan neighborhood of Jerusalem.