Q: One person is asking for Help for his sons health. We gave him (not only me but so many others also gave) some money. Later we came to know that, that person is a fake and he did not have any kind of problems and he doesn't have a child as well. Due to his bad lucky one day, I saw him and spoke to him. He was earning money like this for many years and when I was asked him didn't you fear Allah he said yes I do. When I told him that earning money like this is haraam, he gave me a wired answer. After hearing the answer I was totally confused and I am totally confused. He said if he earned 1 lakh money that way, he will donate some amount as a Zakaat to purify the money. In this way he will be earning halaal income.
Is this true? He said if your earn money unlawfully like interest and many other sources, if you give zakaat or donate some money, it will purify the money. Please guide me?