S. 279 : Offences and prosecutions-Sanction-Chief Commissioner-Commissioner-Compounding of offences-Application-Limitation-Application can be filed either before or subsequent to launching of prosecution-Circular issued by Central Board Of Direct Taxes stipulating limitation period of 12 months-Contrary to legislative intent of provision-Relevant clause of Circular struck down-Matter remitted to decide application on the merits. [S. 119(1), 279(2), Art.226]