Collateral Security

If you use the same property, which you have already given to the Nationalised bank, YOU WILL BE COMMITTING A BIG CRIME.  YOU WILL BE LIABLE TO CRIMINAL ACTION.  Therefore, better drop your idea.

There is a process called parris pasu and if the present banker permits , you can explore chances of giving additional mortgage by Registration with consent of first Bank.  This according to me is simple if the other bank agrees.  It is also possible that your friend can avail same facility with your banker and this makes the process most simple.  All this subject to the fact that your property is carrying more value than your present liability.