(12) باب عَقْدِ الشَّيْطَانِ عَلَى قَافِيَةِ الرَّأْسِ إِذَا لَمْ يُصَلِّ بِاللَّيْلِ
Narrated Abu Huraira:
Allah's Messenger (ﷺ) said, "Satan puts three knots at the back of the head of any of you if he is asleep. On every knot he reads and exhales the following words, 'The night is long, so stay asleep.' When one wakes up and remembers Allah, one knot is undone; and when one performs ablution, the second knot is undone, and when one prays the third knot is undone and one gets up energetic with a good heart in the morning; otherwise one gets up lazy and with a mischievous heart."
Reference: Sahih al-Bukhari 1142
In-book reference: Book 19, Hadith 23
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 21, Hadith 243