Dear Mr.Amit, 

The property would be equally divided between the following relatives of the deceased (propositus) 

i) Widow - 1/3rd

ii) Widow of predeceased son - 1/3rd

iii) Son - 1/3rd. 

Since when the property instantly devolves upon the above instantly after death. The property becomes ancestral in their hands vis-a-vis their children. Hence within his 1/3rd - the son would share it with his children equally.

This is a Scheme common to all Hindus, which includes Jains. 

See : the Schedule to Hindu Succession Act enumerating Class I heirs

The Hindu Succession Act, 1956

THE SCHEDULE

HEIRS IN CLASS I

Son, daughter, widow, mother, son of a pre-deceased son, daughter of a pre-deceased son, son of a pre-deceased daughter, duaghter of a pre-deceased daughter, widow of a pre-deceased son, ¹son of pre-deceased son of a pre-deceased son, daughter of a pre-deceased son of a pre-deceased son, widow of a pre-deceased son of a pre-deceased son.

all get equally by virtue of S.8 HSA.

Feel free to talk !

Bharat Chugh

*Advocate Supreme Court of India

Dear Amit ,

U r query is perfectly answered by Bharat !!.

Thank you very much Bharat. That was verify helpful