Allahu Akbar, also written Allah Akbar, is an Arabic phrase meaning God is greatest. Known as the Takbir, it is central to Islamic worship and is heard in the call to prayer, daily prayers, festivals and moments of celebration or gratitude. Because the phrase has been used for centuries, it is widely recognised far beyond Muslim communities. Short vocal recordings now circulate online in religious videos, documentaries and edits, where the familiar words instantly signal reverence, scale or a turning point.