T-S NS 320.113
Letter addressed to a dignitary named Yefet. Opens with Hebrew praises and wishes for a speedy recovery, then switches into Arabic (in Arabic script) for the body of the letter, which opens with a quotation from the Qaraite sage Yūsuf al-Baṣīr (fl. early 11th century). The continuation of the letter is lost. The Yefet in question may well be Ḥasan/Yefet b. Abī Saʿd Ibrāhīm al-Tustarī, on whom see further T-S 16.50, given the Qaraite content, the grand titles of the addressee, and the fact that he's called ḥemdat ha-nesiʾut (his father-in-law was the Qaraite nasi Ḥizqiyahu). This presumably dates from some time between his marriage ca. 1040–47 and his conversion to Islam ca. 1064. (Alan Elbaum and Marina Rustow)
