Who inherits a divorced man who has no children but has a living sister who has a son and a daughter, and deceased brothers and sisters who have children, in the case that his sister is alive, and who inherits him if his sister dies before him?

If a man dies and has no heir except his sister and his brothers' sons, his sister receives half, and the remainder goes to his male brothers' sons by ta'sib (agnatic inheritance). If a woman dies and has no heir except her brother, all her wealth goes to her brother by ta'sib. The children of the sister, both male and female, as well as the daughters of the brother, are not among the heirs. It is disliked to ask about what has not yet occurred.