Investment in Government specified bonds to save capital gain tax on house property in India.

Under this section, you can invest your capital gain in specified bonds like NHAI or REC.
The maximum investment allowed is ₹50 lakhs, and the investment must be made within six months from the date of sale.
These bonds have a lock-in period of five years.
You cannot sell or pledge them before that.
Interest earned on these bonds are taxable.