Abu Sa’id al-Khudri reported: The Prophet, peace and blessings be upon him, said, “When one of you sees a dream he likes, it is from Allah so let him praise Allah for it and speak about it. When one of you sees something else he dislikes, it is from Satan so let him seek refuge from its evil and not mention it to anyone. It will not harm him.”
Source: Ṣaḥīḥ al-Bukhārī 6584
Grade: Sahih (authentic) according to Al-Bukhari
عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ أَنَّهُ سَمِعَ النَّبِيَّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَقُولُ إِذَا رَأَى أَحَدُكُمْ رُؤْيَا يُحِبُّهَا فَإِنَّمَا هِيَ مِنْ اللَّهِ فَلْيَحْمَدْ اللَّهَ عَلَيْهَا وَلْيُحَدِّثْ بِهَا وَإِذَا رَأَى غَيْرَ ذَلِكَ مِمَّا يَكْرَهُ فَإِنَّمَا هِيَ مِنْ الشَّيْطَانِ فَلْيَسْتَعِذْ مِنْ شَرِّهَا وَلَا يَذْكُرْهَا لِأَحَدٍ فَإِنَّهَا لَا تَضُرُّهُ
6584 صحيح البخاري كتاب التعبير باب الرؤيا من الله