According to search-discovered classical Islamic scholarship, infertility (العقر - al-`uqr) is presented in the Quran not as a deficiency or punishment, but as a profound divine trial and a canvas for demonstrating God's omnipotence. The primary examples are the prophets Zakariyya and Ibrahim, whose wives were barren (`aqir`). Commentators like Ibn Kathir explain their stories as models of unwavering faith, where the human condition of barrenness is met with sincere, heartfelt supplication (dua). The theological foundation for this understanding is Surah Ash-Shura (42:50), which states unequivocally that Allah "renders barren whom He wills," affirming His absolute sovereignty over creation. This synthesis across the prophetic narratives and theological statements establishes infertility within Islam as a test of patience and trust, and a powerful reminder that all creative power belongs to Allah alone.