One of the processes that Zaydism, as a sect that has survived to the present day, went through in the Yemen region is the period that began with Mansûr-Billâh Qasim b. Muhammad, who declared his imamate in the 16th century and continued by the descendants of the ruling class until the declaration of the Republic. However, there is not enough information in the literature about this period, which is known as the Kasimi’s era. Mansûr-Billâh Qasim b. Muhammad has many works (...) on akaid, tafsir, method, islamic law, and in addition, there is a small pamphlet (risalah) written by him. This study aims to introduce the translation of the will written by Mansûr-Billâh Qasim b. Muhammad, who is known as the founder of the Kasimi dynasty, for his son Muayyad-Billâh Muhammad b. Kasım into the literature. (shrink)