A person suffered an illness that prevented him from observing Sawm till his death

A: If the reality is as you mentioned that your father was ill until he died and that he was not able to observe Sawm in Ramadan during his illness until he died; then, there is nothing upon your father: neither making up for these days nor Kaffarah (expiation).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.