Musannaf Ibn Abi Shaybah

Hazrat Abbas al-Ummi says: It has reached me that Hazrat Dawood (peace be upon him) used to say in his supplication: Glory be to You, O Allah! You are my Lord, You are manifest upon Your Throne (in a manner befitting Your majesty), You have cast Your awe over the inhabitants of the heavens and the earth, among the creation the one who fears You the most is the one closest to You. The knowledge of the one who does not fear You is useless! Or (he said) the one who does not obey You is senseless.