Unlawful Interest Does Not Apply Between a Father and Son

“Abu ‘ Abd Allah (a.s.), has said that Amir al-Mu’minin (a.s.), has said, ‘There is no Riba ’ between a man and his sons as well between a master and his slave.”’

There is no Riba ’ between us and those in the state of war with us. We can receive a thousand dirham from them for just one dirham. We have permission to receive from them but we must not give them anything.’”

“Abu Ja‘far (a.s.), has said, ‘ Riba ’ does not apply in the case of a man and his sons, his slave and his wife. Riba ’ applies when you do not own certain goods.’ I then asked, ‘Does it apply between me and the pagans?’…