I am stating below a question again a little more clearly, perhaps.
If a Hindu male (say, A) dies intestate leaving behind his wife (say, B), mother (say C) and a child (say, D), He also has a married (say, E) living.
As per Hindu Succession act, intestate's wife, mother and children,,being class 1 heirs. get equal share of intestate A''s estate
Now, if C (intestate's mother) also dies later, what happens of her right over her share of A's estate) ? Does C's share of intestate male (son) A's estate get divided between B and D or or sister E also being class 1 heir to C also becomes entiled for her share of C's estate and C's estate is divided amongst B, D, and E?
Most import point I wish to know is whether A's estate which passed on to C who also dies later intestate gets divided between B and D or amongst B, D and E.
And, does it matter whether C dies (after A's death) before or after her 1/3 share of A's immovable estate gets legally in her name?