S. 90 :Double taxation relief-Capital gains-Sale pf shares-Tax Residency certificate issued by Mauritius tax authority is unquestionable-Not shell or conduit company-Beneficial owner of capital gains-Capital gains is exempt from taxation-The Assessing Officer is directed to factually verify the aspect, if the shares were acquired after April 1, 2017 and sold prior to March 31, 2019, the benefit under article 13(3B) could be given to that extent. [Art, 13(3A) 27A]