Legal document; accounts

Recto: the opening of a legal document written in Fusṭāṭ, dated 15[67] (?) of the Seleucid era (= 1256 CE), under the authority of a public figure with many titles, including דגל הרבנים; this is presumably David b. Abraham Maimuni. One of the parties is Abū ʿAlā. Verso: accounts in Arabic, with Coptic numerals.