R. Hayyim Modai (d. 1794), Safed scholar journeyed to Europe as an emissary of the Safed community. Passing through Egypt he came across a manuscript of geonic responsa which he published 43 years later under the title Sha’arei Zedek. In 1755 he was appointed a member of the bet din in Constantinople as well as one of the pekidim ("commissioners") of Safed in the town. Following the earthquake in Safed in 1760, he was again sent to Europe in 1762 as an emissary for the town by the Constantinople commissioners, who published four letters on the subject of his mission in order to give it full publicity. After visiting various Italian towns (Mantua, Turin, and Venice in 1763) he went to Holland and England (Amsterdam and London in 1765), and Germany. In 1766 he was in Prague where he had halakhic discussions with R. Ezekiel Landau, who refers to him in respectful terms (responsa Hayyim le-Olam, YD no. 2; Noda bi-Yhudah, Mahadura Kamma, YD no. 87–88). Four years later he returned to Constantinople where he stayed until the death of R. Hayyim ben David Abulafia, when he was invited to succeed him as the rabbi of Izmir. There he remained until 1793. His works include: Tiv Gittin (1875), containing the bills of divorce arranged by him between 1737 and 1775 with the glosses of Yom Tov Israel; and Hayyim le-Olam (1878–79), responsa in two parts, including many written while on his travels; it also contains the responsa of his grandson, Nissim Hayyim Modal, entitled Meimar Hayyim. His glosses on the Shulhan Arukh, Orah Hayyim and Yoreh De'ah, and the Peri Hadash appear in the Berakh Moshe (Leghorn, 1809) of Moses b. Mordecai Galante (pp. 151–69); a responsum by him in the Ma'amar ha-Melekh (Salonika, 1806), of Raphael Abraham Mazli'ah; and an alphabetical poem on the smoking of tobacco (toton) at the beginning of the Avodah Tammah (1903) of Joshua Raphael Benveniste. From 1767 Modai was on friendly terms with R. Hayyim Azulai (Hida).
קובץ זה כולל חלק שלישי וחלק רביעי ששרדו מקובץ גדול של תשובות הגאונים. הסכמות: ר' חיים מודעי, צפת, תקנ"ב;
ר' יצחק מאייו, אזמיר, שלהי טבת תקנ"ב.