S. 271(1)(c): Penalty-Concealment-Bar of limitation for imposition-Pendency of quantum of appeal before Tribunal-Under section 275 as it stood prior to 1-4-2025, penalty order could not be passed during pendency of appeal against quantum assessment before ITAT; accordingly, ad-interim relief was granted restraining Revenue from taking any steps pursuant to penalty order. [S.254(1), 275(1)(a), Art. 226]