How is the inheritance divided among three uterine brothers and one full sister?

If the heirs are limited to uterine brothers and a full sister, then the uterine brothers receive one-third, divided equally among them, and the full sister receives one-half. The estate, after deducting all rights, is divided into fifteen shares: each uterine brother receives two shares, and the full sister receives nine shares. It is advisable to refer inheritance matters to the Sharia courts for investigation, as there may be issues that can only be uncovered through inquiry.