When is the determination of solvency or insolvency to be made regarding an obligation?

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The determining factor is the moment the obligation is declared, as that is the moment of necessity (*hal al-wujub*). If a person becomes wealthy (*yusir*) after this declaration, the manumission (*i'taq*) that was previously binding does not become effective retroactively. Conversely, if a wealthy person subsequently becomes insolvent (*u'sir*), the obligation that was due does not become void, as it was established and is not nullified by subsequent insolvency, similar to a debt incurred through destruction (*dayn al-itlaf*). Ahmad explicitly stated this principle.