ذِكْرُ الْبَيَانِ بِأَنَّ مَنْ تَعَوَّذَ بِاللَّهِ مِنَ الشَّيْطَانِ عِنْدَ رُؤْيَتِهِ مَا يَكْرَهُ فِي مَنَامِهِ لَمْ يَضُرُّهُ ذَلِكَ
A good vision is from Allah and a bad dream (hulm) is from the satan; so if one of you sees anything (in a dream) which he dislikes, he should spit on his left side thrice and seek refuge with Allah from its evil, and then it will never harm him. Abu Salama said: I used to see dreams weighing more heavily upon me than a mountain; but since I heard this hadith I don't care for it (its burden). (Using translation from Muslim 2261d)
سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ «الرُّؤْيَا مِنَ اللَّهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَإِذَا رَأَى أَحَدُكُمُ الشَّيْءَ يَكْرَهُهُ فَلْيَنْفُثْ عَنْ يَسَارِهِ ثَلَاثَ مَرَّاتٍ إِذَا اسْتَيْقَظَ وَلْيَتَعَوَّذْ بِاللَّهِ مِنْ شَرِّهَا فَإِنَّهَا لَنْ تَضُرَّهُ إِنْ شَاءَ اللَّهُ» قَالَ أَبُو سَلَمَةَ «إِنْ كُنْتُ لَأَرَى الرُّؤْيَا هِيَ أَثْقَلُ عَلَيَّ مِنَ الْجَبَلِ فَلَمَّا سَمِعْتُ هَذَا الْحَدِيثَ مَا كُنْتُ أُبَالِيهَا»