tax exemption

u need not submit any docs anywhere.....but u have to retain ur loan statements and bank details abt such payment  as a proof in case a query is been asked by ito.....jst simply file ur return claiming deduction u/s 80c

DIMPY JAIN is correct.

The Loan provider first provides you a provisional certticate which gives break up of  interest and  principal amount of the laon for that financial year .After the financial year is over the loan provider furnishes you the actual interst and Principal break up which you preserve as your records  for preparation of Return but no need to attach the same along with the return