Avoid This Income
Question :
If my father's income is (from) prohibited (sources), is it permissible for us to eat the food that he brings for us? And if it is not permissible, what should we do?
Answer:
If the father's income is (from) prohibited (sources), then it is an obligation to advise him; either you, yourselves, must advise him, if you are able to do so, or seek help from one of the scholars, who is able to convince him. Or seek help from his companions, who might hopefully convince him to avoid this prohibited income. If this is not easy for you, you may eat of it as much as is necessary, and there will be no sin upon you in this case. However, it is not fitting that you should take more than you need, due to the doubt surrounding the permissibility of eating from one whose income is forbidden.
Source:
Ibn 'Uthaimin
Fatawa Islamiyah, Vol. 6 Page 352
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