Hello Jimmyyes if you are applying under non spp then you need to submit as max as possible from below given docs... not each & everything but as much as you can.
1.Income tax returns of your parents as they are sponsors.
2. Bank statements of last 4 months.
3. closing balance certificate showing decent amount of balance.
4. FDs if any.
5. property (movable plus immovable) Evaluation certificate showing total value of properties by CA.
6.Any other income or finance proofs that you can show.
Hope it helps.
I'm applying under Non spp from Kuwait, I decide to show my wife as a sponsor as she is getting monthly salary of 1.5lakh from Kuwait. Do I need to show bank statement of Kuwait account? Then I have Fd of 18laks in NRI account in india. My parents immovable property also can be showed. So do I need to show ITR of my parents.