Passports Act 1967
Section 3 :
Passport or travel document for departure from India :
No person shall depart from, or attempt to depart from India, unless he holds in this behalf a valid passport or travel document.
Explanation. For the purposes of this section,
(a) passport includes a passport which having been issued by or under the authority of the Government of a foreign country satisfies the conditions prescribed under the Passport (Entry into India) Act, 1920 (34 of 1920), in respect of the class of passports to which it belongs;
(b) travel document includes a travel document which having been issued by or under the authority of the Government of a foreign country satisfies the conditions prescribed.