S. 9(1)(i): Income deemed to accrue or arise in India – Business connection – AO considered assessee as supervisory PE – Estimated profit of 10% as profit rate on income earned and 25% as attributable towards PE – Held profits were taxable in India- ad-hoc percentage cannot be applied – matter set-aside to the Assessing Officer – DTAA -India – Germany .[ Art. 5, 7 ]