For the purposes of determining the financial resources of a person receiving assistance under the Comprehensive Social Security Assistance Scheme administered by the Director of Social Welfare, it shall be presumed that the financial resources of that person do not exceed the amount prescribed in subparagraph (a) of Part 1 of Schedule 3 unless there are reasonable grounds to believe or suspect that the financial resources of that person may be such as to render him ineligible for legal aid or liable to pay a contribution by virtue of section 18(1) of the Ordinance.