What is the share of each heir from the deceased's estate, and is the eldest son entitled to receive wages for his work in his deceased father's company if there was no prior agreement on that, and what is the percentage of his share?

The wife receives one-eighth due to the existence of a lineal descendant heir. The remainder goes to the sons and daughters by ta'sib (agnatic inheritance), with the male receiving the share of two females. The inheritance is divided into eighty shares: the wife receives ten shares, each son fourteen shares, and each daughter seven shares.

As for the son working with his father, if there was no agreed-upon wage, he is considered a volunteer and does not take anything from the inheritance. However, if it was customary for the son to receive a wage for his work with his father, and the father did not pay him anything until he died, then in that case, the son receives the wage of the like ( ujrat al-mithl) from the inheritance before its division, and its estimation is referred to experts.