What is the ruling on commenting on the remembrance "In the name of Allah, with whose name nothing on earth or in heaven can cause harm, and He is the All-Hearing, the All-Knowing" by saying: "This is the companionship of His name, so how do you fare with the companionship of His essence?"

This statement is incorrect because the name of Allah is a proper noun for the Being described as having divinity, and it is not a mere name to be distinguished between a "companionship of the name" and a "companionship of the ذات (essence/being)." What is meant by the name is the Named One, and glorifying His name and invoking Him is glorifying and invoking Him, the Most High. Similarly, seeking refuge in His name is seeking refuge in Him, and the companionship of His name means the companionship of His holy Being, Who is designated by this name.