Sahih al-Bukhari 6985
Sahih al-Bukhari · Book 91: Interpretation of Dreams · Good dreams are from Allah
Narrated Abu Sa`id Al-Khudri:
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ يُوسُفَ ، حَدَّثَنَا اللَّيْثُ ، حَدَّثَنِي ابْنُ الْهَادِ ، عَنْ عَبْدِ اللَّهِ بْنِ خَبَّابٍ ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ ، أَنَّهُ سَمِعَ النَّبِيَّ صلى الله عليه وسلم 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 " .
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."