1: Does a father have the right, after having gifted during his lifetime part of his property to some of his…

1: Does a father have the right, after having gifted during his lifetime part of his property to some of his children and not others, to revoke or modify the gift after a few years,especially after the recipients have taken possession and acted upon it, even changing its form, e.g., from a plot of land to a building? 2: If the father is not allowed to revoke the gift as mentioned above, does complying with the father’s will, requiring the recipients of the gift to reconcile with the children who were excluded, or including the gift as part of the total inheritance—constitute a binding obligation as a religiously valid will or not?