He died and left behind two wives, a mother and four children; how should the estate be divided?
Question

                Please can you tell me the ruling for distribution of wealth in the following case. 

A man has two wifes. First wife has one child and had passed away recently. The second wife has three childrens ie 2 sons and 1 daughter. The man didnt divorce the first wife. The man also a mom who is alive. 

In this case can you tell me how will the man's wealth be distributed. The man, his mom, second wife and the childrens are alive. The first wife's chld has two kids ie one son and one daughter.
Praise be to Allah.
      If a man dies and leaves behind a mother, two wives, two 
      daughters and two sons, then the estate is to be divided as follows: 

    The share of the mother is one sixth, because Allah says 
    (interpretation of the meaning): “For parents, a 
    sixth share of inheritance to each if the deceased left children” [al-Nisa’ 
    4:11]. 

    The two wives get one-eighth, which is to be divided equally 
    between them, because Allah says (interpretation of the meaning): 
    “their (your wives) share is a fourth if you leave no child; 
    but if you leave a child, they get an eighth of that which you leave” 
    [al-Nisa’ 4:12]. 

    Ibn Katheer said: Regardless of whether the share is 
    one-quarter or one-eighth, it should be shared out equally between one wife, 
    or two wives, or three wives, or four wives.

    End quote from Tafseer al-Qur’aan al-‘Azeem, 2/229 

    Al-Qurtubi said: They are agreed that the share of one wife, 
    two wives, three wives or four wives is one-quarter if he did not have 
    children, and it is one-eighth if he did have children, and they are to 
    share that, because Allah, may He be glorified and exalted, did not 
    differentiate between one wife or several in this case.

    End quote from al-Jaami‘ li Ahkaam al-Qur’aan, 5/75 

    Whatever remains of the inheritance is to be divided among 
    his children, both males and females, with each male getting the share of 
    two females, because Allah says (interpretation of the meaning): 
    “Allaah commands you as regards your children’s 
    (inheritance): to the male, a portion equal to that of two females” 
    [al-Nisa’ 4:11]. 

    The grandchildren do not get any share of the inheritance if 
    their father and paternal uncles are still alive. See the answer to question 
    number 70575. 

    And Allah knows best.