S. 151 : Reassessment-Sanction-After the expiry of four years-Sanction was given mechanically-Without application of mind-Reason recorded stated that the assessment was completed u/s 143(1), whereas the assessment was u/s. 143(3)-Business of jewellery-Reason stated that failure to disclose salary-Reassessment notice was quashed. [S. 147, 148, Art. 226]