Is it permissible to make a waqf (endowment) for one's children that exceeds one-third of the wealth, provided that what is endowed is equally distributed among them?

There are two forms for the permissibility of an endowment (waqf) for children:

The first is that it be immediate and unconditional. In this case, all wealth may be endowed, provided there is no intention to disinherit an heir. It is recommended to equalize among the children in the endowment according to the inheritance shares, where the male receives the equivalent of two females' shares, or to specify some of them due to need or merit.

The second is that the endowment be contingent upon death. This is permissible according to the majority of scholars and takes the ruling of a will. It is executed from one-third of the wealth or less after the endower's death, and the endower has the right to change or cancel it before death.