My uncle who died was survived by his wife, 2 sisters, three daughters and one son.

Answer

The heirs of the deceased in terms of the Shariah are his wife and three daughters and son. The sisters do not inherit in this case. If his parents or any one of his parents were not alive, then all the assets in his estate will be distributed as follows: The share of his wife is one-eighth (12.5%). The balance must be divided into five equal shares. The son will receive two shares, and each daughter one share.