The assessing officer did not bring any material on record to support his case of estimation of professional receipts of earlier years. We also notice that the assessing offer has assessed the net profit on the alleged suppressed professional receipts, meaning thereby, the assessing officer has presumed that the assessee would have suppressed corresponding expenses also. Again it is only a guess work only, unsupported by any material. Similarly, the average daily collection estimated by the AO was also mere guess work. In effect, there is no material available with the AO to show that the assessee has suppressed professional receipts as well as expenses in order to substantiate the estimation made by him