Musannaf Ibn Abi Shaybah

Hazrat Yahya bin Jada reports that Hazrat Khalid bin Walid used to fear the night, to the extent that he would go out with a sword. Then he became afraid that he might harm someone, so he complained about this to the Messenger of Allah, peace and blessings be upon him. The Prophet, peace and blessings be upon him, said: Jibreel has told me: A group of jinn are plotting and deceiving you, so recite these words: I seek refuge in the perfect words of Allah, which neither the righteous nor the wicked can surpass, from the evil of whatever descends from the sky and whatever ascends to it, from the evil of whatever is created in the earth and whatever emerges from it, from the trials of day and night, and from every visitor of the night except one who brings good, O Most Merciful. So Hazrat Khalid recited these words, and his condition was cured.