Salah of an elderly person who has lost his senses
My paternal uncle is now very old. He does not recognize people any more or remember directions; he cannot understand anything at all. It is as if he is a very young child in terms of his movement and his behavior. He is not able to fast or pray.
I would like to know if I am supposed to pay anything on his behalf to compensate for the Sawm (fasting) that he cannot do, such as feeding the needy, giving charity, etc. I am very concerned to discharge my responsibility for him before Allah and to do him good.
If the reality is as you mentioned, and your uncle cannot now recognize people, directions, etc., and you are responsible for doing what is obligatory for him, he is not required to pray, fast, or feed the needy (instead of not fasting).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.