T-S 20.108
Letter of condolence from from al-Mubārak, Hiba, Faḍl, and Isḥāq, the sons of Yeshuʿa b. Samḥūn, to the ḥaver Abū l-Ḥasan ʿAllun b. Meʾir upon the death of Abū Yūsuf. In Judaeo-Arabic with the address in Arabic script on verso. Also wishing blessings upon the community of the Jerusalemites. The rest of the verso is taken up with a collection of piyyuṭim for mourning, in different hands. (Information from CUDL and Goitein's index card.)