Is it permissible for the children to take from the royalties of their deceased father, the composer and musician, from the National Office for Copyright, or is that forbidden money not permissible for them, and are they allowed to give it as charity on behalf of their father or make it an ongoing charity?

It is not permissible to work in the field of music, for the salary earned therefrom is unlawful, and the intellectual property rights associated with it are unlawful. Scholars have differed regarding the inheritance of unlawfully earned money, and the preponderant opinion is that it is lawful for the heirs, because it was forbidden only for the earner, not for those to whom it was transferred through a permissible means. It is permissible for the heirs of the deceased to benefit from what their father left behind from the salary of this work and what comes to them because of it, if the sale of the rights preceded the father's death, and they must give it in charity on behalf of their father. However, they are not allowed to enter into new contracts that permit the publication of his musical works, and they must stop the publication of any musical compositions or clips and withdraw their registration from the bureau.