بسم الله الرحمن الرحيم
(Fatwa: 938/589/L=1434)
The use of interest money is that it is given in charity without the intention of reward to the poor and needy ones; hence if you spend the amount of interest to the poor and needy ones then it is correct as per the Shariah.
Note: Your sentence “or money coming by any haram source” is ambiguous. Please explain it and submit your query again, then in-shaAllah, you shall be replied.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband
