Is not the definition of worship as "all sayings, actions, and states that God approves of" incorrect, and is not the Prophet's (peace be upon him) definition of it as "supplication" more worthy of being followed?

Boldness in the face of the words of the Imams: for the people were not trifling, rather they spoke in the religion of God with knowledge. He whom God has granted knowledge and faith knows that the verification of the latecomers is inferior to the verification of the Salaf, and that the methodology of the Companions is more sound, and that no saying is innovated but that it is an error. The hadith does not contain a definition of worship; rather, it is an indication of the importance of supplication as a method of exclusivity. The Sharia may retain the linguistic meaning of a word, or it may add restrictions to it; the Lawgiver did not transfer it or change it, but rather used it with restrictions. The commands of God are worship, for the Prophet recited: {And your Lord said, "Call upon Me; I will respond to you."} (40:60), so the scholars inferred the connection between the verse and the hadith. Worship is the ultimate expression of humility and destitution, and it was legislated only for submission to the Creator. Supplication is the greater part of worship, indeed its very essence. It is the servant's manifestation of his helplessness and need, and his acknowledgment that God is All-Powerful and Generous. It is self-evident that one of the most specific attributes of a servant is his hearing of his master's command. There must be an understanding of the texts by the Salaf, for therein lies guidance. And whoever desires the knowledge of the grave, let him adhere to the narrations.