S. 13 : Denial of exemption-Trust or institution-Investment restrictions–Advancing money for acquiring land and construction of building–Delay in execution of sale deed-Advance of money to employee trust-No violation-Denial of exemption is held to be not valid–Application of income-entitle to depreciation though the cost of asset was allowed as application of income. [S. 11, 12AA, 13(1)(d), 32]