S. 48 : Capital gains –Mode of Computation – Sale of shares gifted by promoters – BIFR cannot sanction any modification to scheme directing the Income tax department to give further tax concession without department being consenting to grant additional concession .[ S. 45 , Sick Industrial Companies ( Special Provisions ) Act , 1985 , 3(1)(o) , 17 , 18 , 22A, Art. 226 ]