6647. A work on the circumstances which led to the revelation of particular parts of the Qurʼān and on those verses which abrogate or are abrogated by others
6651. A work on the lengthening and shortening of the days, the mansions of the moon, and the planets
6653. A work on the mystical properties of various parts of the Qurʼān , and various prayers, prescriptions, etc.
6655. A work on the prediction of the weather for any year from the day of the week on which the 1st of Muḥarram falls
6656. A work on the properties of the letters of the alphabets as instruments of divination, with various astrological notes
6658. A work on the secret properties of the letters of the Arabic alphabet and on the signs of the zodiac