S. 9(1)(v): Income deemed to accrue or arise in India-Interest-advanced External Commercial Borrowing (ECB)-Assessee could claim set-off of current year business loss of PE against interest income earned from Indian customers on ECB loans-Treaty itself provided for taxability of income in terms with domestic law provisions-Interest income would be covered under section 115A(1)(a)(iiaa), hence, subject to concessional rate of tax at 5 per cent with applicable cess and surcharge-DTAA-India-UAE [S. 9(1)(i),115A, Art. 11]