Valuable consideration has a meaning in contract law.
And it also has a definition in Art 155 of the ANO, which I quoted.
‘Valuable consideration’ means any right, interest, profit or benefit, forbearance,
detriment, loss or responsibility accruing, given, suffered or undertaken
under an
agreement, which is of more than a nominal nature; (my bold)
There's an ambiguity as to how the sentence is parsed, but my argument is simple -- no agreement means no valuable consideration.