As per section 5 of Indian Succession Act,
Law regulating succession to deceased person’s immovable and movable property, respectively.—
(1) Succession to the immovable property in [India] of a person deceased shall be regulated by the law of [India], wherever such person may have had his domicile at the time of his death.
As per section 30 of the act; As to what property deceased considered to have died intestate.—A person is deemed to die intestate in respect of all property of which he has not made a testamentary disposition which is capable of taking effect. (i) A has left no will. He has died intestate in respect of the whole of his property.
As per section 33 of the act:
Where intestate has left widow and lineal descendants, or widow and kindred only, or widow and no kindred.—Where the intestate has left a widow—
(a) if he has also left any lineal descendants, one-thirds of his property shall belong to his widow, and the remaining two-thirds shall go to his lineal descendants,
Lineal consanguinity is that which subsists between two persons, one of whom is descended in a direct line from the other, as between a man and his father, grandfather and great-grandfather, and so upwards in the direct ascending line, or between a man and his son, grandson, great-grandson and so downwards in direct descending line. A person’s father is related to him in the first degree, and so likewise is his son; his grandfather and grandson in the second degree; his great-grandfather and great-grandson in the third degree, and so on.
Kindred or consanguinity.—Kindred or consanguinity is the connection or relation of persons descended from the same stock or common ancestor.
Where intestate has left no widow, and where he has left no kindred.—Where the intestate has left no widow, his property shall go to his lineal descendants or to those who are of kindred to him, not being lineal descendants.
Where intestate has left child or children only.—Where the intestate has left surviving him a child or children, but no more remote lineal descendant through a deceased child, the property shall belong to his surviving child, if there is only one, or shall be equally divided among all his surviving children.
Where intestate has left no child, but grand-child or grand-children.—Where the intestate has not left surviving him any child but has left a grand-child or grand-children and no more remote descendant through a deceased grand-child, the property shall belong to his surviving grand-child if there is one, or shall be equally divided among all his surviving grand-children.
Thus as per the provisions of Indian Succession Act, the intestate properties shall devolve on all the surviving legal heirs as mentioned in the above lines, i.e., the properties can be divided into 6 shares, surviving sons and daughters getting one such share and the legal heirs (widow and children) of the deceased sons getting one such share in respect of the deceased son which can be further divided among themselves.