According to search-discovered classical Islamic scholarship, Du'a (Supplication) is the profound act of calling upon Allah, representing the very essence of worship. [10] The Prophet Muhammad ﷺ stated, 'Du'a is the worship,' a hadith that scholars like Ibn Kathir explain as the ultimate demonstration of a believer's humility and reliance on their Creator. [7, 12] Across the 16 key Quranic verses on this topic, from the concluding prayers of Surah Al-Baqarah (2:285-286) to the supplications of the 'Ulul-Albab' (people of understanding) in Surah Al-Imran (3:191-194), a unified theme emerges: supplication is the believer's direct, intimate, and continuous conversation with God. [15, 29] Al-Qurtubi highlights the etiquette (adab) embedded in these verses, such as acknowledging one's faults and praising Allah before making a request, which are conditions for acceptance. [8] This synthesis of scripture and scholarship establishes Du'a not merely as a request, but as the central pillar of a Muslim's relationship with Allah, affirming His Lordship and one's own servitude.