Is it permissible for a father to bequeath to his only daughter a portion of his inheritance that exceeds her legal share, and what is the amount of this bequest? And is it permissible for him to sell some of his properties to her without consideration, while there are other heirs such as the mother and siblings?

A will in favor of an heir is impermissible, based on the Prophet's (peace be upon him) saying: "Indeed, Allah has given every rightful person their right, so there is no will for an heir." This includes a will for a daughter.

As for a fictitious sale intended to disinherit some heirs, it is invalid. However, a genuine sale or a complete gift that fulfills all conditions to the daughter or anyone else regarding properties is permissible. In such a case, the daughter owns it, and no one else has the right to claim it.

Furthermore, matters of inheritance must be referred to the Sharia courts for investigation and to safeguard the rights of all heirs.