Is the ruling in Fatwa No. 101869 general for all illicit wealth, or specific to those dealing with usury, and is one excused for being ignorant of the ruling on consuming usury in Muslim lands?

The statement of Sheikh al-Islam in the aforementioned fatwa is general regarding whoever acquired unlawful wealth with the owner's consent, such as usury and the price of alcohol. As for what was taken by usurpation, the principle is to return it to its owners or their heirs. If they are unknown, it should be spent on the welfare of Muslims. If the possessor is poor, he may take what suffices him and spend the remainder.

Ignorance is not an excuse for one who deals in usury if he lives in a place where knowledge of its prohibition is widespread and scholars clarify it. However, if he lives in a place where ignorance of the unlawfulness of such transactions is prevalent and scholars do not clarify the truth, but rather permit them, then he is excused due to his ignorance.