S. 44C: Non-residents – Head office expenditure – Double taxation relief – Article 7(3) of the DTAA between India and UAE – Asessee claimed deduction u/s. 44C – AO allowed only 5% of the adjusted total income as deduction – Held, Art. 7(3) cannot be applied retrospectively – Held, deduction allowed without imposing restriction u/s. 44C- Expenditure incurred outside India exclusively for operations of Indian branches would not fall within ambit of section 44C hence allowable in full – DTAA -India – Dubai . [ S. 90 ,Art.7(3), 25(1) ]