Approval under section 35(1)(ii) requires separate research accounts and timely annual returns and audited account submissions. Approval is granted to Bhagwan Sri Ramana Maharishi Research Centre as an approved institution under section 35(1)(ii) of the Income-tax Act for the category 'Association,' subject to maintenance of separate research accounts and filing prescribed annual returns by 31st May. The association must submit audited annual accounts, income and expenditure statements, and balance-sheet to the prescribed authority by 30th June with copies to tax authorities, and must apply for extension before the approval expiry.