There came to him (the Holy Prophet) a desert Arab and said: I saw in a dream that I had been beheaded and I had been following it (the severed head). Allah's Apostle ﷺ reprimanded him saying: Do not inform about the vain sporting of devil with you during the night.  

عَنْ رَسُولِ اللَّهِ ﷺ أَنَّهُ قَالَ لأَعْرَابِيٍّ جَاءَهُ فَقَالَ إِنِّي حَلَمْتُ أَنَّ رَأْسِي قُطِعَ فَأَنَا أَتَّبِعُهُ فَزَجَرَهُ النَّبِيُّ ﷺ وَقَالَ لاَ تُخْبِرْ بِتَلَعُّبِ الشَّيْطَانِ بِكَ فِي الْمَنَامِ  

Messenger of Allah, I saw in the state of sleep as if my head had been cut off and I had been moving on haltingly after it. Thereupon Messenger of Allah ﷺ said to that desert Arab: Do not narrate to the people the vain sporting of satan with you in your sleep and (the narrator) also said: I heard Messenger of Allah ﷺ in his subsequent address: None amongst you should narrate the vain sporting of devil with him in the dream.  

جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ ﷺ فَقَالَ يَا رَسُولَ اللَّهِ رَأَيْتُ فِي الْمَنَامِ كَأَنَّ رَأْسِي ضُرِبَ فَتَدَحْرَجَ فَاشْتَدَدْتُ عَلَى أَثَرِهِ فَقَالَ رَسُولُ اللَّهِ ﷺ لِلأَعْرَابِيِّ لاَ تُحَدِّثِ النَّاسَ بِتَلَعُّبِ الشَّيْطَانِ بِكَ فِي مَنَامِكَ وَقَالَ سَمِعْتُ النَّبِيَّ ﷺ بَعْدُ يَخْطُبُ فَقَالَ لاَ يُحَدِّثَنَّ أَحَدُكُمْ بِتَلَعُّبِ الشَّيْطَانِ بِهِ فِي مَنَامِهِ  

Messenger of Allah, I have seen in the state of sleep as if my head had been cut off. Thereupon Allah's Apostle ﷺ laughed and said: When the satan plays with any one of you in the state of sleep, do not mention it to the people; and in the hadith transmitted by Abu Bakr (the words are): "If one of you is played with, and he did not make any mention of the word: "Satan."  

جَاءَ رَجُلٌ إِلَى النَّبِيِّ ﷺ فَقَالَ يَا رَسُولَ اللَّهِ رَأَيْتُ فِي الْمَنَامِ كَأَنَّ رَأْسِي قُطِعَ قَالَ فَضَحِكَ النَّبِيُّ ﷺ وَقَالَ إِذَا لَعِبَ الشَّيْطَانُ بِأَحَدِكُمْ فِي مَنَامِهِ فَلاَ يُحَدِّثْ بِهِ النَّاسَ وَفِي رِوَايَةِ أَبِي بَكْرٍ إِذَا لُعِبَ بِأَحَدِكُمْ وَلَمْ يَذْكُرِ الشَّيْطَانَ