Q: Can i offer my fard salah behind a person reading non fard salah. In our musjid when someone comes late and i am reading my nafl a guy would come behind and make me imam of his fard salah. Is this okay? (text December 1st, 2011)
A: A person offering fard prayer cannot follow the person offering nafl salah.(See sarah AtTanweer)
Allah Certainly Knows Best.