Hadith on Dreams: Three types of vision during sleep.....

Abu Huraira reported: The Messenger of Allah, peace and blessings be upon him, said, “The most truthful of you are those with the truest dreams. There are three kinds of vision: a righteous vision, which is good news from Allah, a distressful vision from Satan, and a vision arising from oneself. If one of you sees something he dislikes, let him stand to pray and not speak to people about it.”

Source: Ṣaḥīḥ Muslim 2263

Grade: Sahih (authentic) according to Muslim

عَنْ أَبِي هُرَيْرَةَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَصْدَقُكُمْ رُؤْيَا أَصْدَقُكُمْ حَدِيثًا وَالرُّؤْيَا ثَلَاثَةٌ فَرُؤْيَا الصَّالِحَةِ بُشْرَى مِنْ اللَّهِ وَرُؤْيَا تَحْزِينٌ مِنْ الشَّيْطَانِ وَرُؤْيَا مِمَّا يُحَدِّثُ الْمَرْءُ نَفْسَهُ فَإِنْ رَأَى أَحَدُكُمْ مَا يَكْرَهُ فَلْيَقُمْ فَلْيُصَلِّ وَلَا يُحَدِّثْ بِهَا النَّاسَ

2263 صحيح مسلم كتاب الرؤيا