(18) باب قِيَامِ اللَّيْلِ
Narrated Abu Hurairah:
The Messenger of Allah (ﷺ) as saying: When one you sleeps, the devil ties three knots at the back of his neck, sealing every knot with, "You have a long night, so sleep." So if one awakes and mentions Allah, a knot will be loosened; if he performs ablution another knot will be loosened; and if he prays, the third knot will be loosened; and in the morning he will be active and in good spirits; otherwise he will be in bad spirits and sluggish. (FR)
Reference (FR): Sunan Abi Dawud 1306 (FR)
In-book reference (FR): Book 5, Hadith 57 (FR)
English translation (FR): Book 5, Hadith 1301 (FR)