According to search-discovered classical Islamic scholarship, the story of Hagar (Hājar), the wife of Prophet Abraham and mother of Prophet Ishmael, is a foundational narrative in Islamic history, symbolizing profound trust in God (*tawakkul*) and perseverance. While not mentioned by name in the Quran, her actions are the direct basis for the ritual of *Sa'i* between the hills of Safa and Marwah, as referenced in Surah Al-Baqarah (2:158). The Tafsir of Ibn Kathir and other classical scholars confirms that this verse was revealed to sanctify the Sa'i, a commemoration of Hagar's desperate search for water for her infant son in the barren valley of Mecca. This act of faith was answered by the miraculous emergence of the Zamzam well. The detailed account of her story is preserved in authentic hadith, such as in Sahih al-Bukhari. The synthesis of Quranic allusion and prophetic tradition establishes Hagar as a central figure in the establishment of Mecca and in the sacred rites of Hajj and Umrah.