Tax exemption recognition granted to religious congregation subject to income application, permitted investments, business limits, and filing obligations. Central Government notifies the Congregation of Christian Brothers in India, Kolkata under clause (23C)(iv) of section 10 for specified assessment years, subject to conditions: exclusive application or accumulation of income for its objects; investment limits to forms in section 11(5) except certain tangible voluntary contributions; business income excluded unless incidental and separately accounted; regular filing of returns; and transfer of surplus and assets on dissolution to a similarly purposed charitable organization.