ANSWER:

He should explain to his father that this is haram Rizq and Allah gives this to Muslims and disbelievers alike! 

However, this doesn’t mean it is halal or that Allah is pleased with it!

It is like someone fornicating with a girl and says that this is Rizq from Allah! 

Someone’s father says God blessed him by giving him money and other things. While he earns from clear haram, such as intoxixants, gambling, lying. This does not seem like rizq Allah gave him as blessings but as tests. What should the son say in this case to his father who has clearly misunderstood this?

Character and Morals, Halal/Haram Matters | March 8, 2019 8:47 am
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I was telling to my friend that the thing which is harmful for the body is haram eg. Smoking etc. Then he questioned that if a diabetic patient eats sugary food is it also haram for him. Isaid no its makrooh but I couldnt give a logical reason. Please tell me the reason and way to give dawah in such cases.