S. 56 : Income from other sources-Purchase of immoveable property-Agreement value and stamp valuation was less than 10 per cent-Addition is held to be not justified-Amendment made in section 50C(1) by inserting third proviso by Finance Act, 2018, with effect from 1-4-2019 is curative in nature and same would apply retrospectively. [S. 50C(1), 56(2)(vii)(b)]