In the appeal to the Supreme Court it was contended, Inter alia, on behalf of the department (i) that Rule 21 A was valid having been made in exercise of the rule making power granted to the State Government under sections 19(1) and 19(2) (c) of the Act whereby it could make rules for the assessment to tax under the Act of businesses which were discontinued or the ownership of which had changed; (ii) that further more under section 10, the whole of the amount outstanding on the date of the default was charged on the property of the person liable to pay the tax; therefore, in the present case, the business which was transferred to the respondent was charged with the payment of sales tax and it was open to the sales tax authorities to proceed against the assets of the business for realising the amount of sales tax due; and (iii) that upon a true construction of the registered instrument dated October 5, 1956, the respondent undertook to pay all liabilities like sales tax imposed in regard to the business.