I took a loan of rs.10 lac in march 2010 and gave advance payment to buy a house. I took this loan from a freind @12% per annum. I did not pay any interest to him till date. Now i want to pay him the interest with the principal amount. Can i take tax benifit on this. I got my property registered in june 2010. And what are the supporting documents i need from the lender if any requierd.