What is the ruling on a person supplicating for guidance and good for himself and for others, while he is still consuming unlawful money from his parents who work in cultivating and trading hashish, even with his intention to get rid of this money?

Cultivating hashish and drugs is forbidden (haram), and the money earned from it is illicit (haram) money. It is not permissible to deal with someone whose entire wealth comes from this source. However, if a person's lawful wealth is mixed with unlawful wealth, it is permissible to deal with them, though it is disliked (makrooh), as long as the transaction does not involve the illicit money itself. Therefore, it is not permissible for a person to eat from their father's unlawfully acquired money except out of necessity (food and shelter), and they must seek another source of livelihood. It is recommended to pray for their guidance.