Hisn al-Muslim
What to do if you have a bad dream or nightmare — Du'a 1
(يَنفُثُ عَن يَسَارِهِ)) (ثلاثاً
English meaning
[((Spit on your left three times)(Spit: A form of spitting comprising mainly of air with little spittle)) - (Seek refuge in Allah from shaytan and the evil of what you saw (Three Times)) - (Do not relate it to anyone) - (Turn and sleep on the opposite side to which you were sleeping on previously.) - (Get up and pray if you so desire.) ]