How can an NRI / PIO make payment for purchase of residential / commercial property in India ?

Payment can be made by NRI / PIO out of

1. Funds remitted to India through normal banking channel or
2. Funds held in NRE / FCNR (B)/ NRO account maintained in India
3. No payment can be made either by traveller’s cheque or by foreign currency notes.
4. No payment can be made outside India.