S. 9(1)(i): Income deemed to accrue or arise in India – Business connection – Income attributable to permanent establishment – For applicability of article 5(1) of DTAA it should be an establishment through which business of an enterprise is wholly or partly carried on and further profits of foreign enterprise are taxable only where said enterprise carries on its ‘core business’ through PE – Project office in India cannot be construed as fixed place as no core activity took place from its office in India Deletion of addition by the High Court is affirmed – DTAA- India – Republic of Korea [ Art.5 (1), 7 ]