What is the ruling on saying "Allah, the legend of legends" or referring to Him as a "legend" with the intention of praise, not myth?

It is not permissible to describe Allah Almighty except with what He has described Himself, or what His Messenger (peace and blessings be upon him) has described Him with. For the names and attributes of Allah are determined by divine revelation (tawqeefiyyah). Describing Allah Almighty as a myth is an offensive and abusive description that does not befit the station of Lordship and Divinity, for myths signify falsehoods.