Income from salary and profession

Dear members A person having one time professional receipts of Rs.3,00,000 on which tds u/s 194J is deducted i.e. Rs.30,000. He has some expenses in rendering that service amounting Rs.2,50,000. The net income being Rs.50,000. He has salary income also of Rs.8,00,000 My query is : can he claim Rs.50,000 as other income and file ITR1 Or He has to show Rs.50,000 as professional income and file ITR4 Note: Profession is not covered under specified profession. Please give your valuable feedback. Thanks Rachit