Q - I work for a public school and one of the conditions of employment is to contribute to the state retirement fund. This fund gives out annual statements that include the amount of interest credited during the previous fiscal year. Do I have to give away the amount of interest now or can I do it once I cash this fund, which is in thirty years?
A - You do not have to give away the interest right now since the funds have not come into your possession. Once the entire amount comes into your possession then give it away.
Anytime an illicit amount of money comes into one's possession it should be given to a lowly cause, such as toilet supplies for the mosque or any other such thing and it will not be considered sadaqa either.