or in the exemption clause, has to be strictly construed. When once the ambiguity or doubt is resolved by interpreting the applicability of exemption clause strictly, the Court may construe the notification by giving full play bestowing wider and liberal construction. The ratio of Parle Exports case [CCE v. Parle Exports (P) Ltd., (1989) 1 SCC 345 : 1989 SCC (Tax) 84] deduced as follows: (Wood Papers Ltd. Case [Union of India v. Wood Papers Ltd., (1990) 4 SCC 256 : 1990 SCC (Tax) 422] , SCC p. 262, para 6) “6. … Do not extend or widen the ambit at stage of applicability. But once that hurdle is crossed, construe it liberally.” 60. We do not find any strong and compelling reasons to differ, taking a contra view, from this. We respectfully record our concurrence to this view which has been subsequently, elaborated by the Constitution Bench in Hari Chand case [CCE v. Hari Chand Shri Gopal, (2011) 1 SCC 236] . 66.To sum up, we answer the reference holding as under: 66.1.Exemption notification should be interpreted strictly; the burden of proving applicability would be on the assessee to show that his case comes within the parameters of the exemption clause or exemption notification. 66.2. When there is ambiguity in exemption notification which is subject to strict interpretation, the benefit of such ambiguity cannot be claimed by the subject/assessee and it must be interpreted in favour of the Revenue."