Hello aspirant. These are the required documents

To prove the nri status of the relative

1. Affidavit of relative disclosing his full identity

2. Passport

3.resident of NRI, Visa

4.proof of residence that is something like driving licence

5. Foreign bank account passbook proof copy

6. A certificate or a letter stating the clear relationship between student and relative with duly signatures etc

Pretty much is this

Hope this helps

Regards

Nikhitha