By his tolerant attitude toward the Karaites with whom he dwelt in Egypt, as well as his convincing scholarly style, he won their admiration and weakened the position of their own leadership.
Kuna ta elas Egiptuses koos karaiimidega ja suhtus neisse sallivalt, samuti tänu oma veenvale õpetlaslikule stiilile, võitis ta karaiimide austuse ja nõrgendas nende endi juhtide positsiooni.