In the Islamic tradition, dreams are viewed as a significant spiritual phenomenon, meticulously categorized by the Prophet Muhammad (ﷺ) into three distinct types. According to search-discovered classical scholarship, this foundational framework distinguishes between: 1) a righteous vision (الرؤيا - Ar-Ru'ya), which are glad tidings from Allah and considered a part of prophethood; 2) a distressing or bad dream (الحلم - Al-Hulm), which originates from Satan to cause grief; and 3) subconscious reflections (حديث النفس - Hadith an-Nafs), which are meaningless dreams stemming from one's own thoughts. This classification is central to the Quranic narrative, where the story of Prophet Yusuf (Joseph) in Surah 12 serves as the primary case study on the power, interpretation, and divine purpose of Ru'ya. Classical scholars like Ibn Kathir and Ibn Sirin extensively used this prophetic model to interpret the Quranic accounts and provide principles for dream interpretation, emphasizing that while true visions are a form of divine communication, they are not a source of religious law.