According to search-discovered classical Islamic scholarship, the concept of 'Islam' is fundamentally defined as the conscious, willing 'Self-Surrender to Allah'. The pivotal verse, Al-Imran 3:85, establishes this as the only 'din' (religion or way of life) that will be accepted by God. Ibn Kathir, in his renowned tafsir, explains that this verse is not merely about a label, but about the reality of complete submission to monotheism and obedience to Allah's final revelation through Prophet Muhammad. Al-Tabari adds historical context, noting the verse was revealed to clarify that previous religious communities could not claim to be on the path of submission if they rejected the final message. The linguistic root 'S-L-M' also gives the meaning of 'peace', indicating that true inner peace is a direct fruit of this submission. Therefore, Quran 3:85 frames self-surrender not as one religion among many, but as the universal, timeless requirement for a human being's relationship with their Creator, perfected and finalized in the message of Prophet Muhammad.