According to search-discovered classical Islamic scholarship, the concept of Avoiding Major Sins, or *Ijtinab al-Kaba'ir*, is a foundational principle for a Muslim's salvation, explicitly detailed in Surah An-Nisa, verse 4:31. Ibn Kathir's tafsir explains this verse as a divine covenant: if believers consciously abstain from the gravest offenses forbidden by Allah, He promises to expiate their minor sins and grant them a noble entrance to Paradise. This principle is further elucidated by scholars like Imam al-Dhahabi in his monumental work, *Al-Kaba'ir* (The Major Sins), which categorizes these severe transgressions—such as Shirk, murder, and consuming Riba—that must be actively shunned. The linguistic analysis of 'Ijtinab' reveals it is not passive avoidance but a deliberate, conscious act of distancing oneself from disobedience out of Taqwa (God-consciousness). The synthesis of this single Quranic verse and extensive scholarly tradition establishes that focusing one's spiritual efforts on avoiding the Kaba'ir is the key that unlocks Allah's vast mercy for lesser human failings, forming a practical and hopeful path to salvation.