Dear Navinkumar Naicker,
Refer link to master circular issued by RBI
https://rbi.org.in/scripttts/BS_ViewMasCirculardetails.aspx?id=5754#ufe
A.8 Unspent Foreign Exchange
8.1 As stated above, unspent foreign exchange brought back to India by a resident individual should be surrendered to an Authorised Person within 180 days from the date of return of the traveller. Exchange so brought back can be utilized by the individual for his/her subsequent visit abroad.
8.2 However, a returning traveller is permitted to retain with him, foreign currency travellers cheques and currency notes up to an aggregate amount of USD 2000 and foreign coins without any ceiling beyond 180 days. (cf. Notification No. FEMA 11/2000-RB dated May 3, 2000). Foreign exchange so retained, can be utilized by the traveller for his subsequent visit abroad.
8.3 A person resident in India can open, hold and maintain with an Authorised Dealer in India, a Resident Foreign Currency (Domestic) Account, out of foreign exchange acquired in the form of currency notes, bank notes and travellers cheques from any of the sources like, payment for services rendered abroad, as honorarium, gift, services rendered or in settlement of any lawful obligation from any person not resident in India.
8.4 The account may also be opened / credited with foreign exchange earned abroad, including proceeds of export of goods and/or services, royalty, honorarium, etc., and/or gifts received from close relatives (as defined in the Companies Act) and repatriated to India through normal banking channels by resident individuals.
8.5 The eligible credits to the Resident Foreign Currency (Domestic) Account, out of foreign exchange acquired in the form of currency notes, bank notes and travellers cheques, are as under :-
(i) acquired by him from an Authorised Person for travel abroad and represents the unspent amount thereof or
(ii) acquired by him, while on a visit to any place outside India, by way of payment for services not arising from any business in or anything done in India and by way of honorarium or gift or
(iii) acquired by him, from any person not resident in India, and who is on a visit to India, as honorarium, gift, for services rendered or in settlement of any lawful obligation.
Note: Where a person approaches an Authorised Person for surrender of unspent/ unutilized foreign exchange after the prescribed period of 180 days, Authorised Person should not refuse to purchase the foreign exchange merely on the ground that the prescribed period has expired.