<p style='text-align: justify;'>Work on establishing the calendar, concerned with the Karaite-Rabbanite calendar dispute over the number of days during which holidays are celebrated in Israel and other countries. Mentions the following individuals: Abū l-Ḥusayn ibn Mašiaḥ; al-Fayyūmi (Saʿadya), and the following locations: al-Raqqa, Tiberias, the river of Egypt, and Bālis. Also mentions the following literary works: Kitāb al-[...], Kitāb al-Ifṣāḥ[.], Kitāb al-Intiqām, al-Mukāfaḥah. </p>