Musannaf Ibn Abi Shaybah 25146 — A man who is frightened by something

It is narrated from Yahya bin Ja'dah that he said: Sayyiduna Khalid bin al-Walid (may Allah be pleased with him) would become frightened at night and would go out in that state with his sword on him. Then it was feared that he might wound someone, so he complained about this to the Prophet (peace and blessings be upon him). He said: "Jibril told me that a powerful jinn intends evil for you, so recite (this): 'I seek refuge in the perfect words of Allah Almighty, which no righteous or wicked person can pass beyond, from the evil of everything that descends from the sky and whatever ascends into it, from everything He has created in the earth and whatever comes out of it, from the trials of night and day, and from the evil of everything that comes by night, except what comes by night with good, O Most Merciful.'" So Sayyiduna Khalid (may Allah be pleased with him) said these words, and this condition left him.