What is the ruling on feeling rage and anger upon seeing one's father use drugs, knowing that he prays and his son supplicates for his guidance?

The child must strive for the guidance of his father by increasing supplication for him, showing him piety, and being gentle with him. He should initiate a conversation with him about the matter and explain the impermissibility of smoking, if possible. Otherwise, he should seek assistance from someone who can advise him, such as the Imam of the mosque or some elder relatives, or inform him about the matter through pamphlets, brochures, or tapes.