Turkish rabbi; born at Salonica; died there Sept., 1677; claimed descent from Joseph ben Gorion. He was a son of the learned Samuel ben Pera?yah of Salonica, and a pupil of Rabbi ?ayyim Shabbethai in that city, where he also became rabbi. ?asdai was the author of responsa, which appeared under the title "Torat ?esed," Salonica, 1722, containing also letters written by him to Aaron ben ?ayyim. His novell� on the ?oshen Mishpa? and on some Talmudic treatises have remained unpublished.
?asdai's uncle, Daniel ben Pera?yah, added notes to Joseph ben Shem-?ob's "She'erit Yosef" (Salonica, 1568).