Spending interest-based money on the interests of Muslims

Question:
He says: I deposited my money in one of the banks a long time ago, and when I withdrew the amount, they told me: This is for you, profits of about fifty thousand riyals. I knew that this is riba (usury or interest) and that it is not permissible for me. Now I ask: In our village, there is a well, or a reservoir, which is a water source for this village, and people drink from it. Is it valid for me to put this amount in it? We want to expand it and increase the flow of water, and increase the benefit?

Answer:
Yes, if you take such an amount, or if an amount comes to a person that is not lawful; then he puts it in the interests of Muslims, in avenues of good, like usurped property that he usurped and its owners forgot it and its owners are unknown, he gives it in charity to the poor, or puts it in the interests of Muslims, and expanding the well, and putting a wall around it, this is from the interests of Muslims, and likewise feeding the poor, or paying off the debts of debtors, or marrying off those in need, all of this is from the interests of Muslims, and you do not consume it.