(6)The prescribed form of the returns referred to in sub-sections (1) and (3) of this section, and in clause (i) of sub-section (1) of section 142 shall, in such cases as may be prescribed, require the assessee to furnish the particulars of income exempt from tax, assets of the prescribed nature and value, held by him as a beneficial owner or otherwise or in which he is a beneficiary, his bank account and credit card held by him, expenditure exceeding the prescribed limits incurred by him under prescribed heads and such other outgoings as may be prescribed.