What is the ruling on the belief that a person's name affects their share of provision, fortune, and misfortune, and what is the ruling on the method of calculating a name to change it based on that, knowing that some believe that God is the sole influence?

This act stems from polytheistic beliefs and unlawful methods. It is considered a form of divination based on polytheism, as it presumes to determine people's destinies as if it knows the unseen. This is one of the gravest forms of polytheism in Rububiyyah (Lordship). This differs from optimism based on good names and their meanings, which is what the Prophet, peace and blessings be upon him, used to do by changing ugly names to good ones, and his love for good omens.