Calling out to Allah Ta'ala as "Ya Wajib ul Wujood"

Address Allah Ta`ala with the sifaat that have been recorded in the Quraan Shareef and hadeeth. Waajibul wujood is an istilaah of the mutakallimeen. The Quraan Shareef says: "وَلِلَّهِ ٱلْأَسْمَآءُ ٱلْحُسْنَىٰ فَٱدْعُوهُ بِهَا" - call Him by His beautiful names. Obviously, they are the names that have been recorded.

And Allah Ta'ala (الله تعالى) knows best.