Son making use of the money of his father who deals in Riba

Q 4: Is it permissible for a son to make use of his father's money, although it is gained from Riba (usury)?

A: Riba is Haram (prohibited) according to the Qur'an, the Sunnah and Ijma` (consensus of scholars). If your father deals in Riba, you should advise him and clarify to him the ruling on Riba and its punishment. It is impermissible to take any of your father's money (Part No. 22; Page No. 345) if you know that he gained it from Riba. You also have to earn your living through lawful means prescribed by Allah. Whoever fears Allah and keeps their duty towards Him, He will make a way for them to get out from every difficulty; and He will provide them from sources they could never imagine.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.