According to search-discovered classical Islamic scholarship, the concept of Strength (al-Quwwah) is a profound, multi-faceted attribute whose ultimate and perfect source is Allah Himself, described in the Quran as 'the Possessor of Strength, the Firm' (51:58). Ibn Kathir's analysis across numerous verses clarifies that strength granted to creation—be it physical, spiritual, or societal—is a transient gift and a test. The Quran illustrates this through the lifecycle of humanity, created from weakness, given strength, then returned to weakness (30:54), highlighting utter dependence on the Creator. Al-Qurtubi's juridical perspective underscores the warning that disunity and disobedience directly cause the loss of collective strength (8:46), a divine principle observed in the downfall of arrogant, powerful nations of the past. Therefore, the synthesis of Quranic teachings establishes that true, enduring strength for a believer or a community is achieved not through material power alone, but through unwavering faith, obedience, and unity under Allah's command.