Short answer. No. Rule 39, Section 13 exempts from execution The right to receive legal support, or money or property obtained as such support, or any pension or gratuity from the Government. Both the entitlement and what you actually receive under it are protected.
What the law says
The right to receive legal support, or money or property obtained as such support, or any pension or gratuity from the Government
Rule 39, Section 13 — Property exempt from execution. Read the full provision →
The clause protects two different things
Read the words slowly, because they cover more ground than people expect. First, the right to receive legal support is exempt — a creditor cannot step into your shoes and collect the support owed to you. Second, the money or property obtained as such support is exempt as well, so the protection does not evaporate the moment the support is paid. Third, and separately, any pension or gratuity from the Government is placed outside execution. Three protections in one sentence, aimed at income that exists because someone cannot fully provide for themselves.
Why support cannot be intercepted
Legal support is what one family member owes another for the necessities of living. It is measured by the recipient's need and the giver's means, and it is not really the recipient's wealth in any ordinary sense — it is the mechanism by which they eat. Allowing a creditor to garnish it would transfer the burden straight back onto the person the law was protecting. The exemption therefore follows the money one step past payment, which is unusual in this section and clearly deliberate.
"Pension or gratuity from the Government"
The pension limb of the clause is framed by source. What it describes is a pension or gratuity from the Government — retirement and separation benefits paid out of the public system rather than every arrangement that might be called a pension. If a benefit does not come from that source, this clause is not the one to rely on, though other laws may exempt particular funds; the section itself closes by preserving properties specially exempted by law.
Mixing funds is the practical risk
The commonest way this exemption is lost is not legal but bookkeeping. Once a pension or support payment is deposited into an account holding ordinary earnings and business receipts, nobody looking at the balance can tell which pesos are protected. Section 13 does not do that tracing for you. Where an account receives exempt income, keeping it separate — and keeping the remittance records — is what makes the exemption provable rather than merely true.