As per section 10(6)(vi), the remuneration received by a foreign national as an employee of a foreign enterprise for services rendered by him during his stay in India is exempt from tax, provided the following conditions are fulfilled—
(a) the foreign enterprise is not engaged in any trade or business in India ;
(b) his stay in India does not exceed in the aggregate a period of 90 days in such year ; and
(c) such remuneration is not liable to be deducted from the income of the employer. As per section 10(6)(viii), any salaries received by or due to a non-resident foreign national for services rendered in connection with his employment on a foreign ship where his total stay in India does not exceed in the aggregate a period of 90 days in the year is exempt from tax.