S. 148A : Reassessment-Conducting inquiry, providing opportunity before issue of notice-Cash credit-Non-speaking order-Survey by OSBCPL indicated that assessee advanced cash loan and received interest-letter of issuance of a DIN No. to the notice issued-Held, Mandatory to follow procedure u/s 148, [S. 68, 133A, 148, 148A(b), 148A (d)) Art. 226]