According to search-discovered classical Islamic scholarship, Shaitan (الشيطان) is the definitive Quranic term for the principal entity of evil, a rebellious Jinn whose proper name is Iblis, and who acts as the avowed, perpetual enemy of humanity. The comprehensive analysis of Ibn Kathir across the Quran's 88 mentions reveals that Shaitan’s primary function is to mislead mankind from the path of Allah through whispering (waswasa), deception, and making evil deeds seem alluring. Al-Tabari clarifies the linguistic root, *shatana* (to be distant), highlighting his essential nature as one who is far from divine mercy. Al-Qurtubi emphasizes the practical implications, deriving rulings such as the necessity of seeking refuge (isti'adha) in Allah from his influence, especially before reciting the Quran. The synthesis of these scholarly views establishes Shaitan not as a co-equal force to God, but as a created being whose limited power of temptation serves as a test for humanity, a theme consistently reinforced from his initial rebellion against Adam (as detailed in Surah Al-Baqarah and Al-A'raf) to his final destiny in Hellfire.