The Prophet ﷺ said, "A good dream is from Allah, and a bad dream is from Satan. So whoever has seen (in a dream) something he dislikes, then he should spit without saliva, thrice on his left and seek refuge with Allah from Satan, for it will not harm him, and Satan cannot appear in my shape."  

النَّبِيُّ ﷺ الرُّؤْيَا الصَّالِحَةُ مِنَ اللَّهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَمَنْ رَأَى شَيْئًا يَكْرَهُهُ فَلْيَنْفِثْ عَنْ شِمَالِهِ ثَلاَثًا وَلْيَتَعَوَّذْ مِنَ الشَّيْطَانِ فَإِنَّهَا لاَ تَضُرُّهُ وَإِنَّ الشَّيْطَانَ لاَ يَتَرَاءَى بِي  

I used to see dreams (and was so much perturbed) that I began to quiver and have temperature, but did not cover myself with a mantle. I met Abu Qatada and made a mention of that to him. He said: I heard Messenger of Allah ﷺ as saying: A good vision comes from Allah and a (bad) dream (hulm) from devil. So when one of you sees a bad dream (hulm) which he does not like, he should spit on his left side thrice and seek refuge with Allah from its evil; then it will not harm him.  

كُنْتُ أَرَى الرُّؤْيَا أُعْرَى مِنْهَا غَيْرَ أَنِّي لاَ أُزَمَّلُ حَتَّى لَقِيتُ أَبَا قَتَادَةَ فَذَكَرْتُ ذَلِكَ لَهُ فَقَالَ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ الرُّؤْيَا مِنَ اللَّهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَإِذَا حَلَمَ أَحَدُكُمْ حُلْمًا يَكْرَهُهُ فَلْيَنْفُثْ عَنْ يَسَارِهِ ثَلاَثًا وَلْيَتَعَوَّذْ بِاللَّهِ مِنْ شَرِّهَا فَإِنَّهَا لَنْ تَضُرَّهُ  

I heard the Messenger of Allah (May peace be upon him) say: A good vision comes from Allah and a dream (hulm) from the devil, so when one of you sees what he dislikes, he must spit on his left (three times), and seek refuge in Allah from its evil. It will then not harm him.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ الرُّؤْيَا مِنَ اللَّهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَإِذَا رَأَى أَحَدُكُمْ شَيْئًا يَكْرَهُهُ فَلْيَنْفُثْ عَنْ يَسَارِهِ ثَلاَثَ مَرَّاتٍ ثُمَّ لْيَتَعَوَّذْ مِنْ شَرِّهَا فَإِنَّهَا لاَ تَضُرُّهُ  

“(Good) dreams come from Allah and (bad) dreams come from Satan, so if anyone of you sees something that he dislikes, let him spit dryly to his left three times, and seek refuge with Allah from the accursed Satan three times, and turn over onto his other side.”  

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ الرُّؤْيَا مِنَ اللَّهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَإِنْ رَأَى أَحَدُكُمْ شَيْئًا يَكْرَهُهُ فَلْيَبْصُقْ عَنْ يَسَارِهِ ثَلاَثًا وَلْيَسْتَعِذْ بِاللَّهِ مِنَ الشَّيْطَانِ الرَّجِيمِ ثَلاَثًا وَلْيَتَحَوَّلْ عَنْ جَنْبِهِ الَّذِي كَانَ عَلَيْهِ  

I heard the Messenger of Allah (May peace be upon him) say: A good vision comes from Allah and a dream (hulm) from the devil, so when one of you sees what he dislikes, he must spit on his left (three times), and seek refuge in Allah from its evil. It will then not harm him. (Using translation from Abū Dāʾūd 5021)   

عَنْ رَسُولِ اللهِ ﷺ قَالَ «الرُّؤْيَا مِنَ اللهِ وَالْحِلْمُ مِنَ الشَّيْطَانِ فَإِذَا رَأَى أَحَدُكُمْ شَيْئًا يَكْرَهُهُ فَلْيَنْفِثْ عَنْ يَسَارِهِ ثَلَاثَ مَرَّاتٍ وَلْيَسْتَعِذْ بِاللهِ مِنْ شَرِّهَا فَإِنَّهَا لَا تَضُرُّهُ»  

I heard the Messenger of Allah (May peace be upon him) say: A good vision comes from Allah and a dream (hulm) from the devil, so when one of you sees what he dislikes, he must spit on his left (three times), and seek refuge in Allah from its evil. It will then not harm him. (Using translation from Abū Dāʾūd 5021)   

عَنْ رَسُولِ اللهِ ﷺ قَالَ «الرُّؤْيَا مِنَ اللهِ وَالْحُلُمُ مِنَ الشَّيْطَانِ فَإِذَا رَأَى أَحَدُكُمْ شَيْئًا يَكْرَهُهُ فَلْيَنْفِثْ عَنْ يَسَارِهِ ثَلَاثًا وَلْيَسْتَعِذْ بِاللهِ مِنْ شَرِّهَا فَإِنَّهَا لَا تَضُرُّهُ»  

"الرُّؤيَا مِنَ الله، وَالحُلْمُ مِنَ الشَّيطَانِ، فَإذَا رَأَى أَحَدُكُمْ شَيئًا يَكْرهُه فَليَبْصُقْ عَنْ يَسَارهِ ثَلَاثًا، ويَسْتَعِذْ بِاللهِ مِنَ الشَّيطَانِ الرَّجِيم ثَلَاثًا، وَليَتَحَوَّلْ عَنْ جَنْبه الَّذِي كَانَ عَلَيهِ".  

"الرُّؤيَا الصَّالِحَةُ مِنَ الله، وَالحُلْمُ مِنْ الشَّيطَان. فَإِذَا رَأى أَحَدُكُمْ شَيئًا يَكْرَهه فَليَنْفُثْ حِينَ يَسْتَيقِظ عَنْ يَسَارِه ثَلَاثًا وليتعَوَّذ بالله مِنْ شَرِّهَا فَإِنَّها لَا تَضُرُّه".