Sahih Muslim Book - 42, Hadith - 5904

حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، حَدَّثَنَا لَيْثٌ (ح) وَحَدَّثَنَا ابْنُ رُمْحٍ ، أَخْبَرَنَا اللَّيْثُ ، عَنْ أَبِي الزُّبَيْرِ ، عَنْ جَابِرٍ ، عَنْ رَسُولِ اللهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ قَالَ: إِذَا رَأَى أَحَدُكُمُ الرُّؤْيَا يَكْرَهُهَا ، فَلْيَبْصُقْ عَنْ يَسَارِهِ ثَلاَثًا وَلْيَسْتَعِذْ بِاللَّهِ مِنَ الشَّيْطَانِ ثَلاَثًا ، وَلْيَتَحَوَّلْ عَنْ جَنْبِهِ الَّذِي كَانَ عَلَيْهِ.

It was narrated from Jabir that the Messenger of Allah (s.a.w) said: “If one of you sees a dream that he dislikes, let him spit to his left three times and seek refuge with Allah from the Shaitan three times, and let hum turn over from the side on which he was sleeping.”