The Prophet ﷺ said, "A true good dream is from Allah, and a bad dream is from Satan."  

عَنِ النَّبِيِّ ﷺ قَالَ الرُّؤْيَا مِنَ اللَّهِ وَالْحُلْمُ مِنَ الشَّيْطَانِ  

The Prophet ﷺ said, "If anyone of you sees a dream that he likes, then it is from Allah, and he should thank Allah for it and narrate it to others; but if he sees something else, i.e., a dream that he dislikes, then it is from Satan, and he should seek refuge with Allah from its evil, and he should not mention it to anybody, for it will not harm him."  

أَنَّهُ سَمِعَ النَّبِيَّ ﷺ يَقُولُ إِذَا رَأَى أَحَدُكُمْ رُؤْيَا يُحِبُّهَا فَإِنَّمَا هِيَ مِنَ اللَّهِ فَلْيَحْمَدِ اللَّهَ عَلَيْهَا وَلْيُحَدِّثْ بِهَا وَإِذَا رَأَى غَيْرَ ذَلِكَ مِمَّا يَكْرَهُ فَإِنَّمَا هِيَ مِنَ الشَّيْطَانِ فَلْيَسْتَعِذْ مِنْ شَرِّهَا وَلاَ يَذْكُرْهَا لأَحَدٍ فَإِنَّهَا لاَ تَضُرُّهُ