Under Article 348, authoritative texts of all Bills, Acts, ordinances, orders, rules, regulations, and bye-laws at Union level shall be in English.

Article 348(1)(b): Authoritative texts of Union legislation/subordinate legislation shall be in English. Article 348(3): President may authorize authoritative Hindi translation of Acts, etc., but English text remains authoritative until Parliament otherwise provides. Ensures legal certainty and uniformity in interpretation while allowing progressive use of Hindi.