Sec. 50c

I sold out a property through a sale agreement in the year 2010-11 for Rs. 100000 and also transfer the possession of the said property on the said date.

But the sale deed is executed in the next year i.e. 2011-12. Stamp Valuation Authority took the value os Rs. 115000/-

In which year tax liability will arise?

Please mention relevant case laws(if any).