What is the legal ruling regarding the issue of inheritance and the contract concluded with the grandmother, and is what happened considered an unlawful appropriation of people's property, especially after the paternal uncles and paternal aunt refused to sign certain papers following the death of the mother and grandmother?

It is permissible for an heir to relinquish their share to whomever they wish if the one relinquishing is a legally competent and sound individual. If the grandmother is of sound mind and not in her death illness, then her relinquishment is valid, and ownership of her share transfers to you. However, if the relinquishment occurs during a feared death illness, it falls under the ruling of a bequest and must not exceed one-third of the estate and must not be for an heir. If it is, then its execution is contingent upon the approval of the other heirs.

If the grandmother's relinquishment was in exchange for a sum of money, then this is a sale, and the agreed-upon amount must be paid to her heirs if any part of it remains outstanding. If the sale was fictitious, then it is not considered false testimony from the paternal uncles or aunts if they state that the grandmother sold her share to her grandchildren.