In the terminology of Islam, duʿāʾ (Arabic: دُعَاء IPA: [duˈʕæːʔ], plural: ʾadʿiyah أدْعِيَة [ʔædˈʕijæ]; archaically transliterated Doowa[1]), literally meaning "invocation", is an act of supplication. The term is derived from an Arabic word meaning to 'call out' or to 'summon', and Muslims regard this as a profound act of worship. Muhammad is reported to have said, "Dua is the very essence of worship,"