https://www.scconline.com/blog/post/2023/04/13/income-tax-act-duty-drawback-receipts-or-duty-entitlement-passbook-benefits-do-not-form-part-of-the-net-profits-of-eligible-industrial-undertakings-supreme-court-legal-news-legal-research-updates/
Assessee not entitled to deduction u/s 80-IB of Income Tax Act on Duty drawback / DEPB Schemes profit: Supreme Court