Home Loan Rebate query

I have one Query w.r.t Housing Loan Deduction. My query is as follows.

I am planning to buy home and for which my father is ready to give loan to me. I will repay to him on an EMI. (Principal + Interest) Can you please tell me how can I claim deduction for this. To claim deduction of Interest and Principal what documents I need to submit to IT Dept.

            Hope to get feedback on this