Every foreigner entering India is required to furnish the registration report containing a true statement of the foreigner's address in India and such other particulars as may be appropriate to the registration officer. They are also required to report change of their addresses, if any, during their stay in India. However, no such report is necessary for a foreigner holding visa for 180 days or less. Every registration report shall be made in writing in the English language and in quadruplicate.
(Registration of Foreigners Rules, 1939)

Every foreigner, who enters India with a valid visa shall obtain from the Registration Officer having jurisdiction at that place at which he presents a registration report a permit indicating the period during which he is authorised to remain in India and also indicating the place or places for stay, if any, specified in the visa.
(The Foreigners Order, 1948)