Are we sinful for our father remaining in the hospital to be given painkillers and have his suffering alleviated, despite his refusal and his saying that he will not forgive us?

May Allah grant you both solace in the passing of your father. We ask Allah to encompass him in His mercy and to make his illness an expiation for his sins and an elevation of his ranks. There is no sin upon you for keeping your father in the hospital, as you deemed that to be better for him in terms of care, attention, availability of treatment, and alleviation of pain. We advise you to be diligent in honoring him after his death by supplicating for him, seeking forgiveness for him, giving charity on his behalf, and maintaining kinship ties that are only maintained through him.