S. 148A: Reassessment-Conducting inquiry, providing opportunity before issue of notice-Non-Resident Indian-Investment in shares-Automatic route of FDI-Violation of principle of natural justice-Matter was sent back to concerned officer from stage where he committed serious error in not complying with statutory requirements-Order passed under section 148A(d) was quashed and set-aside. [S. 56(2)(vii), 148, 148A(b), 148A(d), Art. 226]