An acceptable way for Muslims to spend Riba is to donate it to charity. Rewards will not be received for doing so, but by donating Riba to a charitable cause, your wealth will be cleansed, and you will have disposed of the haram Riba in a way that does not benefit yourself.

Interest money cannot be spent as Zakat. When Zakat is given, the donor does so out of a religious obligation under the third pillar of Islam. In addition, when Zakat is given, the donor can expect to receive a reward, but a person who gives Riba to charity should do so without intending or expecting to receive a reward (sawab).