Musannaf Ibn Abi Shaybah 31291 — What is said when seeking a need

Khalid said that Sa'id bin al-Musayyib stated: I entered the mosque thinking that morning had come, but a long night still lay upon me, and there was no one in the mosque except me, so I stood up. Suddenly I heard the sound of someone moving behind me, and I became afraid. Then someone said: O you who have filled your heart with alarm, do not fear, or do not be afraid, and say these words: O Allah, You alone are the King, the Possessor of power; whatever matter You will comes about. Then ask for whatever occurs to you. Sa'id said: After that I never asked Allah for anything except that Allah answered my supplication.