Permissiblity of refering to sheikh Abdul Qadir Al Gaylani as”GHous al azam”

Is it permissible to refer to sheikh Abdul Qadir Al Gaylani as”GHous al azam” ? Because some state the following

“Al ghaus ul azam the manifestation of Allah’s attribute the all powerful who hears the cry for help and saves the one in need” Secret of secrets
How can this be proved wrong?Because none but Allah must be called upon!