“19. In respect of the first plea, if the judgments in Chhugamal Rajpal (1971) 79 ITR 603 (SC), Chanchal Kumar Chatterjee (1974) 93 ITR 130 (Cal) and Govinda Choudhury and Sons case (1977) 109 ITR 370 (Orissa) are examined, the absence of reasons by the Assessing Officer does not exist. This is so as along with the proforma, reasons set out by the Assessing Officer were, in fact, given. However, in the instant case, the manner in which the proforma was stamped amounting to approval by the Board leaves much to be desired. It is a case where literally a mere stamp is affixed. It is signed by an Under Secretary underneath a stamped Yes against the column which queried as to whether the approval of the Board had been taken. Rubber stamping of underlying material is hardly a process which can get the imprimatur of this court as it suggests that the decision has been taken in a mechanical manner. Even if the reasoning set out by the Income-tax Officer was to be agreed upon, the least which is expected is that an appropriate endorsement is made in this behalf setting out brief reasons . Reasons are the link between the material placed on record and the conclusion reached by an authority in respect of an issue, since they help in discerning the manner in which conclusion is reached by the concerned authority. Our opinion is fortified by the decision of the apex court in Union of India v. M. L. Capoor, AIR 1974 SC 87, 97 wherein it was observed as under: