Allah's Messenger (ﷺ) said, "During your sleep, Satan knots three knots at the back of the head of each ofyou, and he breathes the following words at each knot, 'The night is, long, so keep on sleeping,' If thatperson wakes up and celebrates the praises of Allah, then one knot is undone, and when he performsablution the second knot is undone, and when he prays, all the knots are undone, and he gets up in themorning lively and in good spirits, otherwise he gets up in low spirits and lethargic."