Is the financial compensation paid for vacating the maternal uncle's house, which he used to live in, solely his right, or should it be distributed among his living and deceased siblings?

If the house was owned by the grandfather, it is an inheritance that must be divided among the heirs according to Sharia (definition), and no one is permitted to claim sole possession of it except with the permission of the remaining heirs. If the house is sold, its price is to be divided among the heirs who were alive at the time of the grandfather's death.

As for a rented house: 1. An indefinite rental contract: This is considered void, and the contract must be rescinded, the property returned to the owner, and fair market rent paid. No compensation may be taken except for house renovations made by the tenant with the owner's permission. If the grandfather made these renovations, the compensation is to be divided among his heirs. 2. A valid, fixed-term rental contract: This is not invalidated by the death of the tenant. Rather, the usufruct of the rented house transfers to his heirs, and they have the right to benefit from it or to assign it in exchange for a sum from the owner. If the grandfather was the tenant, the money received is to be divided among his heirs who were alive at the time of his death.