Mr. Ajay Kumar Rastogi, learned advocate, representing the petitioner, has placed before us the relevant provisions of Section 148 of the Act. It is his submission that under proviso to Section 148 unless the twin pre-conditions of “reason to believe” and “any income chargeable to tax has escaped assessment for any assessment year” are satisfied, there cannot be initiation of reassessment proceeding. It is his case that during the assessment year 2011-12 weighted deduction of Rs.54,72,75,816/claimed by the petitioner under Section 35(2AB) stood disallowed during course of original assessment proceedings and, therefore, the same cannot be said to have escaped assessment. Learned counsel submits that belief formed by the Assessing Officer that income of Rs.54,72,75,816/- has escaped assessment is contrary to the materials on record and is a mere pretence, moreover the proceeding under Section 148 of the Act cannot be initiated at this stage when the Commissioner of Tax, Circle-1 in exercise of power under Section 263 of the Act has not found any illegality, irregularity or infirmity in disallowance of weighted part of deduction under Section 35(2AB) and allowance of research and development expense actually incurred by the petitioner amounting to Rs.48,51,70,541/by the Assessing Officer in assessment order under Section 143(3) dated 28.03.2014. The attention of this Court has been drawn towards Annexure2 by which objection raised by the petitioner has been rejected by the Assessing Officer. According to Assessing Officer, the mere fact that the earlier Assessing Officer had examined the issue related to deduction claimed under Section 35(2AB) does not absolve the petitioner from