How is the inheritance distributed among the heirs: a son, a grandson, a mother, 4 daughters, and a granddaughter?

If the heirs are limited to those mentioned, the mother receives one-sixth due to the presence of a lineal descendant, and the remainder goes to the son and the four daughters by ta'sib (residuary inheritance), with the male receiving the share of two females. The grandson and granddaughter receive nothing as they are blocked by the direct son. The inheritance is divided into thirty-six shares: the mother receives six shares, the son ten shares, and each daughter five shares. It is advisable to consult the Sharia courts in matters of inheritance due to their complexity and to ensure the rights of all.