Is this waqf (endowment) valid, fulfilling the conditions, and enforceable, given that the endowment is initially for the endowers for life, then for their male children and those who come into existence from them—excluding the widowed, orphaned, and unmarried women—without including grandchildren, and then for their lineal descendants generation after generation (the male of each generation), and in the event of their extinction, the endowment reverts to their paternal relatives, and if they become extinct, it reverts as an endowment to Mecca and Medina?

The aforementioned waqf (endowment) is valid and can be acted upon. It involves three matters:

Firstly: Endowing for oneself. This is permissible according to a group of jurists, and it is the view of the Hanafis and a narration from Imam Ahmad, which some Hanbalis preferred, and it is the practice in our time.

Secondly: Designating some children for the endowment to the exclusion of others, such as giving to males without females, or allocating a specific category. This is permissible according to the Hanafis and all other jurists, but it is disliked if there is no legitimate Sharia reason for it. The endower has the freedom to prioritize and arrange in the waqf.

Thirdly: The waqf with a severed beneficiary (munqati' al-jiha), meaning that if the designated beneficiary ceases to exist, the waqf reverts to the endower's heirs as an endowment upon them, unless the endower specified another beneficiary. In this document, the waqf is designated for the beneficiaries' relatives from the father's side, then to Mecca and Medina if they become extinct, and there is no objection to this.