Al-Matalib al-'Aliyah 3364 — What to say when sleepless

It is narrated from Muhammad bin Yahya bin Habban that Sayyiduna Khalid bin al-Walid (may Allah be pleased with him) suffered from sleeplessness, or was afflicted with the trouble of being unable to sleep. He complained of this to the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) ordered him to seek refuge, when lying down on his bed, through the perfect words of Allah in these words: 'A'udhu bi-kalimatillahi al-tammati min ghadabihi wa 'iqabihi wa sharri 'ibadih, wa min hamazati al-shayatini wa an yahdurun' (I seek refuge in the perfect and complete words of Allah from His anger, from His punishment, from the evil of His servants, and from the whisperings and incitements of the devils, and from their coming to me).
Imam Musaddad narrated this hadith in his Musnad. This narration is mursal, because Muhammad bin Yahya's hearing from Sayyiduna Khalid bin al-Walid (may Allah be pleased with him) is not established; however, these words also occur among the adhkar in other authentic hadith.