In Surah Quraysh, the word al-Bayt refers to the Ka'abah. The Ka'abah is an ancient and sacred structure located in the city of Mecca, which is central to Islamic worship and considered the house of Allah. The Quraysh tribe, who are the subject of this Surah, were the custodians of the Ka'abah, giving them prestige and responsibility. This sacred site plays a fundamental role in Islamic rituals, including the Hajj pilgrimage, and it was respected and venerated even before the advent of Islam. Recognizing the Ka'abah as al-Bayt highlights its spiritual and historical significance in Islam.