of negligible value. But with respect to something in which he is not permitted to transact, neither his claim nor his denial is valid. So who brings a claim on his behalf, and who denies on his behalf?
The answer is: his guardian is the one who brings a claim against anyone who owes a right to this minor; and his guardian is likewise the one who undertakes the denial if a claim is brought against him.
The opposite of one who is sane is the insane person. No claim or denial is valid from an insane person; however, a claim on his behalf is valid, just as it is for a minor, and his guardian undertakes this.
The opposite of a free person is an enslaved person. No claim or denial is valid from him with respect to matters in which he is not permitted to transact. As for matters in which he may transact—such as divorcing his wife—a claim and denial from him are valid. But in financial matters, no claim or denial from him is valid, because an enslaved person owns nothing, and the property in his possession belongs to his master. The Prophet ﷺ said: “Whoever sells a slave who possesses property, his property belongs to his seller, unless the buyer stipulates otherwise.” (1) Thus, since the property in his possession does not belong to him but rather to his guardian, neither his claim nor his denial is valid, because he does not own that property.
In this context, a financially mature person is one who manages his wealth soundly. The opposite is the spendthrift, who expends his wealth on what is unlawful or on what brings no benefit. An example of the unlawful is tobacco; and, as an example of what brings no benefit, the scholars mentioned someone buying oil and setting it alight. Such a person is not financially mature, because he expends his wealth on something of no benefit. The Prophet ﷺ prohibited the wasting of wealth (2), and wasting wealth means spending it on what is unlawful or on what brings no benefit.