Hai Ben Nahshon:

By: Executive Committee of the Editorial Board. , Max Schloessinger

Gaon of Sura (889-896) and president of the school of Nehardea. He was, according to a manuscript in the Vatican Library, the author of opinions on many Talmudical tractates. He protested against reciting "Kol Nidre" (Rosh, on Yoma, end; Ṭur Oraḥ Ḥayyim, 619; Kol Bo, § 68). His father, R. Nahshon, and grand-father, R. Zadok, were both geonim.

Bibliography:

Rechts-Gutachten der Geonen, ed. Cassel, p. 9;
Fürst, in Orient, Lit. x. 261;
Rapoport, in Bikkure ha-'Ittim, x. 37, xi. 82;
Steinschneider, Die Arabische Literatur,p. 101, note 1;
Neubauer, M. J. C. i. 39, 189;
Lands-huth, 'Ammude ha-'Abodah, i. 62;
Harkavy, Teshubot ha-Geonim, p. 384;
Halévy, Dorot ha-Rishonim, iii. 282;
see also Jew. Encyc. v. 571, s.v. Gaon.

E. C. M. Sc.