Summarize the following court judgment. Appeal No. 891 of 1963. Appeal by special leave from the judgment and decree dated June 26	 1959 of the Assam High Court in Letter Patent Appeal No. 1 of 1959. N. C. Chatterjee and D. N. Mukherjee	 for the appellants. Sarjoo Prasad and K. P. Gupta for respondents. The Judgment of the Court was delivered by Shah	 J. Biswambar Roy predecessor interest of the appellants was Granted on February 20	 1928	 a lease for ten 115 years 1335 B.S. to 1344 B.S. at an annual rental of Rs. 75/ in respect of a plot of land	 part of Dag No. 3615 in the town of Silchar	 District Cachar in the State of Assam. Biswambar Roy constructed on the land	 buildings	 some for residential use	 and others as warehouses. On the expiry of the period of the original lease	 Biswambar Roy obtained a fresh lease in respect of a part of the land for ten years Baisakh 1345 B.S. to Chaitra a 1354 B.S. at an annual rental of Rs. 70/ under an instrument dated February 22	 1938. The respondents purchased the interest of the landlords the land and instituted on August 3	 1951 an action in the Court of the Sadar Munsiff	 Silchar against Biswambar Roy for a decree for vacant possession of the land. The suit was decreed by the Munsiff. Biswambar Roy appealed to the Subordinate Judge	 Silchar. During the pendency of the appeal	 the Non agricultural Urban Areas Tenancy Act 12 of 1955 enacted by the Assam Legislature was brought into force. Biswambar Roy claimed protection from eviction under section 3 of Act 12 of 1955. The Subordinate Judge held that Biswambar Roy had acquired under section 5(1)(a) of the Act the rights of a permanent tenant	 since he had constructed within the period prescribed permanent structures for residential or business purposes. He accordingly reversed the decree passed by the Trial Court and dismissed the suit. Against that decree	 an appeal was preferred to the High Court of Assam. Deka	 J.	 held that Biswambar Roy could not claim the protection of section 5(1) (a) of the Act	 since he had let out to tenants the buildings constructed on the land. In the view of the learned Judge	 by the use of the expression "for residential or business purposes" in section 5(1)(a) it is intended that buildings constructed by the tenant should be utilized by the tenant himself for his own residence or for carrying on business and that it is not the intention of the Legislature that third persons should be protected by section 5 from eviction from those structures. An appeal under the Letters Patent from that judgment was heard by C. P. Sinha	 C. J.	 and Mehrotra	 J. The learned Judges differed. Sinha	 C. J.	 was of the view that permanent structures constructed by Biswambar Roy conformed to the descripticon "residential or business purposes" and Biswambar Roy became under Act 12 of 1955 a permanent tenant thereof and was not liable to be evicted except for non payment of rent. With that view Mehrotra	 J.	 did not agree. He held that a tenant who obtains land on lease for erecting a structure thereon not for his own residential or business purposes but for letting out to others does not build "a permanent structure on the land of	 the tenancy for residential or business purposes". and may not claim protec tion under section 5(1)(a). Since there was no majority concurring in the judgment agreeing or reversing the decree appealed from	 under section 98(2) of the Code of Civil Procedure the appeal was ordered to be dismissed. Against the decree passed by the High Court	 with special leave	 this appeal is preferred. 116 This Court has held that section 5 of Assam Act 12 of 1955 has retrospective operation: Refiquennessa vs Lal Bahadur Chetri & Others	(1) and the only question to be determined in this appeal is whether a tenant qualifies for protection under section 5 of the Act only after building permanent structures on the land of the tenancy if he occupies them for his own residential or business purposes. The material part of the section reads: "(1) Notwith tanding anything in any contract or in any law for the time being in force (a) Where under the terms of a contract entered into between a landlord and his tenant whether before or after the commencement of this Act	 a tenant is entitled to build	 and has in pursuance of such terms actually built within the period of five years from the date of such contract	 a permanent structure on the land of the tenancy for residential or business purposes	 or where a tenant not being so entitled to build	 has actually built any such structure on the land of the tenancy for any of the purposes aforesaid with the knowledge and acquiescence of the landlord	 the tenant shall not be ejected by the landlord from the tenancy except on the ground of non payment of rent;" Protection under the first part of section 5(1)(a) may be claimed by a tenant if three conditions co exist: (i) under the terms of the contract of tenancy the tenant is entitled to build on the land of the tenancy; (ii) that pursuant to such liberty	 he has actually built	 within the period of five years from the date of the contract a permanent structure on the land of the tenancy; and (iii) that the permanent structure is for residential or business purposes. The first two conditions are fulfilled in this case. But the learned Judges of the High Court disagreed on the fulfillment of the third condition: they differed as to the true meaning of the expression" a permanent structure. . for residential or business purposes". In the view of Sinha	 C. J.	 under the Act the character of the structure is determinative and not personal use by the ten. ant. Mehrotra	 J.	 held that the permanent structure must be for residential or business purposes of the tenant. We are unable to agree with the view taken by Mehrotra	 J.	 because the Legislature has not	 in conferring rights of permanent tenancy	 either expressly or by implication enacted any such qualification as is suggested by the learned Judge. The section merely requires that the permanent structure must be one adapted for residential or business purposes. If the structure is not adapted to such purposes	 the protection of section 5(1)(a) will not be available. To read the expression "permanent (1) ; 117 structure on the land of the tenancy for residential or business purposes" as meaning permanent structure on the land of the tenancy constructed by the tenant for his own residential or business purposes is to add words which are not found in the section. It was urged on behalf of the landlords that it could not have been the intention of the Legislature to confer by section 5(1)(a) protection upon sub tenants. It was said that a sub tenant is not a tenant within the meaning of section 3(g) of the Act	 and he cannot claim protection from eviction under section 5(1)(a). In our judgment	 the argument is wholly misconceived. Protection is conferred in terms by section 5 upon the tenant of the land and not upon the tenant of the buildings constructed upon the land. It is not necessary in this case to consider whether by virtue of the definition of "tenant" in section 3(g) of the Act which includes a person who derives his title from a tenant	 a sub tenant of the land is entitled to protection of section 5(1)(a). In the present case	 the tenant of the land has claimed protection. By merely letting the premises constructed on the land obtained by him on lease	 the tenant does not cease to be in possession of the land. The relation between the landlord and the tenant of the land continues to subsist until it is lawfully determined. Possession of the land obtained by the tenant remains his even after he has let out the building constructed by him	 and a building constructed by the tenant for use as residential or business purposes does not cease to be one for residential or business purposes	 when it is let out. We therefore agree with the view taken by Sinha	 C. J.	 that the protection of section 5(1)(a) extends to a tenant who has constructed on the land obtained on lease permanent structures which are adapted for use for residential or business purposes and by letting out the structures the tenant does not forfeit the protection conferred by the statute. The appeal is therefore allowed and the decree passed by the High Court vacated and the plaintiffs ' suit dismissed. The appellants who are the representatives of the tenant will be entitled to their costs in this Court. There will be no order as to costs in the High Court. Appeal allowed.

Certain structures for residential and business purposes were raised by a tenant of land in the term of Silchar in Assam. The landlord secured a decree for ejectment against the tenant. During the pendency of the appeal the Non Agricultural Urban Areas Tenancy Act	 Assam Act 12 of 1955 was brought into force. The tenant claimed protection from eviction under section The Subordinate Judge held that the tenant had acquired units section 5(1) (a) of the Act the right of a permanent tenant since he had constructed within the pres cribed period structures for residential or business purposes. He accordingly dismissed the suit. The High Court in further appeal held that the protection under section 5(1)(a) was not available to the tenant since he had let out to tenants the buildings constructed on the land. The tenant	 by special leave	 appealed to this Court. HELD:(i) The section merely requires that the permanent structure must be one adapted for residential or business purposes. If the structure is not adapted to such purposes. the protection of section 5 (1) (a) will not be available. To read the expression "permanent structure on the land of the tenancy for residential or business purposes" as meaning permanent structure on the land of the tenancy constructed by the tenant for his own residential or business purposes is to add words which are not found in the section. [116 H]. (ii) Protection is conferred in terms by section 5 upon the tenant of the land and not upon the tenant of the buildings constructed upon the land. By letting out the structures the tenant of land does not lose the protection given by the statute. [117 C].