Answer:
(Fatwa: 1308/1199=B)
If your friend has halal income as well and his halal income is more than haram income, you can eat and drink at his house. But, if the haram income is more than halal income or the entire income is haram then you are not allowed to eat his meal. You should excuse him politely.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
