The Prophet ﷺ said, "A good dream that comes true is from Allah, and a bad dream is from Satan, so if anyone of you sees a bad dream, he should seek refuge with Allah from Satan and should spit on the left, for the bad dream will not harm him."  

عَنِ النَّبِيِّ ﷺ قَالَ الرُّؤْيَا الصَّالِحَةُ مِنَ اللَّهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَإِذَا حَلَمَ فَلْيَتَعَوَّذْ مِنْهُ وَلْيَبْصُقْ عَنْ شِمَالِهِ فَإِنَّهَا لاَ تَضُرُّهُ وَعَنْ أَبِيهِ حَدَّثَنَا عَبْدُ اللَّهِ بْنُ أَبِي قَتَادَةَ عَنْ أَبِيهِ عَنِ النَّبِيِّ ﷺ مِثْلَهُ  

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  

“(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 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. (Using translation from Muslim 2261a)   

كُنْتُ أَلْقَى مِنَ الرُّؤْيَا شِدَّةً غَيْرَ أَنِّي لَا أُزَمَّلُ حَتَّى حَدَّثَنِي أَبُو قَتَادَةَ أَنَّهُ سَمِعَ رَسُولَ اللهِ ﷺ يَقُولُ الرُّؤْيَا مِنَ اللهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَإِذَا حَلَمَ أَحَدُكُمْ حُلْمًا يَكْرَهُهُ فَلْيَبْصُقْ عَنْ يَسَارِهِ ثَلَاثَ بَصَقَاتٍ وَلْيَسْتَعِذْ بِاللهِ مِنَ الشَّيْطَانِ فَإِنَّهُ لَا يَضُرُّهُ  

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)   

أَنَّهُ سَمِعَ رَسُولَ اللهِ ﷺ يَقُولُ الرُّؤْيَا مِنَ اللهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَإِذَا رَأَى أَحَدُكُمْ شَيْئًا يَكْرَهُهُ فَلْيَبْصُقْ عَنْ شِمَالِهِ ثَلَاثَ مَرَّاتٍ وَلْيَسْتَعِذْ بِاللهِ مِنْ شَرِّهَا فَإِنَّهَا لَنْ تَضُرَّهُ  

[Machine] The Messenger of Allah ﷺ said, "A good dream is from Allah, and a bad dream is from Satan. So if anyone of you sees a dream that he dislikes, let him spit to his left three times and seek refuge in Allah from Satan, for it will not harm him."  

قَالَ رَسُولُ اللَّهِ ﷺ «الرُّؤْيَا الصَّالِحَةُ مِنَ اللَّهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ فَإِذَا حَلَمَ أَحَدُكُمْ حُلْمًا يَخَافُهُ فَلْيَبْصُقْ عَنْ شِمَالِهِ ثَلَاثَ مَرَّاتٍ وَلْيَتَعَوَّذْ بِاللَّهِ مِنَ الشَّيْطَانِ فَإِنَّهَا لَا تَضُرُّهُ»  

[Machine] "The Prophet ﷺ said, 'Good dreams are from Allah and nightmares are from Satan. If any of you has a nightmare that frightens him, let him spit on his left side three times and seek refuge in Allah from Satan, for it will not harm him.'"  

أَنَّ النَّبِيَّ ﷺ قَالَ «الرُّؤْيَا الصَّالِحَةُ مِنَ اللهِ وَالْحُلُمُ مِنَ الشَّيْطَانِ فَإِنْ حَلَمَ أَحَدُكُمْ حُلُمًا يَخَافُهُ فَلْيَبْصُقْ عَنْ شِمَالِهِ ثَلَاثًا وَلْيَتَعَوَّذْ بِاللهِ مِنَ الشَّيْطَانِ فَإِنَّهَا لَا تَضُرُّهُ»  

(a companion of the Prophet ﷺ and one of his cavalry men) "I heard Messenger of Allah ﷺ saying, "A good dream is from Allah, and a bad dream is from Satan; so, if anyone of you had a bad dream which he disliked, then he should spit on his left and seek refuge with Allah from it, for it will not harm him." (Using translation from Bukhārī 7005)   

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ «الرُّؤْيَا الصَّالِحَةُ مِنَ اللهِ وَالْحُلُمُ مِنَ الشَّيْطَانِ فَإِذَا حَلَمَ أَحَدُكُمُ الْحُلُمَ يَكْرَهُهُ فَلْيَبْصُقْ عَنْ يَسَارِهِ ثَلَاثًا وَلْيَسْتَعِذْ بِاللهِ مِنْهُ فَلَنْ يَضُرَّهُ»  

[Machine] It was narrated that the Messenger of Allah ﷺ said: "Righteous dreams are part of Prophethood, forty-six parts thereof." He also said: "Righteous dreams are from Allah and bad dreams are from Satan. Therefore, when one of you sees a dream that he dislikes, let him spit three times to his left and seek refuge in Allah from its evil, for it will not harm him."  

أَنَّ رَسُولَ اللهِ ﷺ قَالَ «الرُّؤْيَا الصَّالِحَةُ جُزْءٌ مِنْ سِتَّةٍ وَأَرْبَعِينَ جُزْءًا مِنَ النُّبُوَّةِ» وَقَالَ «الرُّؤْيَا الصَّالِحَةُ مِنَ اللهِ وَالْحُلُمُ مِنَ الشَّيْطَانِ فَإِذَا حَلَمَ أَحَدُكُمْ حُلُمًا يَخَافُهُ فَلْيَبْصُقْ عَنْ يَسَارِهِ ثَلَاثَ مَرَّاتٍ وَلْيَسْتَعِذْ بِاللهِ مِنْ شَرِّهِ فَإِنَّهُ لَنْ يَضُرَّهُ»  

"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".