S. 40(a)(i) : Amounts not deductible-Deduction at source-Non-resident-Amount not claimed as expenditure-No disallowance can be made-Exemption certificate for non deduction of tax at source- Once certificate has been issued no disallowances can be made- If income is not chargeable to tax in India-No disallowance can be made- Once it is held that income is not chargeable to tax in India, no disallowance can be made. [S. 195, 197]