The Holy Prophet (s.
The Holy Prophet (s.a.w.a.) has warned that hands should not be dirty or full of food particles while going to sleep as, in that case, shaitan overbomes and it is probable that that man may get mad and in that case he himself is to be blamed. He also asked children's faces to be washed before they went to sleep as otherwise shaitan will smell their hands and frighten them.
Many reliable traditions state that the Holy Prophet (s.a.w.a.) had asked the beds to be cleaned and sweeped before going to bed as any hidden harmful animal (insect) which is roosting inside the bed may be thrown out and the person becomes safe from any harm. Complete manners of sleeping: It is sunnat to sleep inclined on the right side and facing Qibla and the right hand should be kept under the face. Sleeping inclined towards the left side is makhrooh.