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The surname al-Dakhil (meaning "the Entrant" or "the Conqueror" in Arabic) refers to the conquering ruler of Mecca, Ali bin Abi Talib. He is revered by Muslims as the fourth Caliph of the Rashidun Caliphate and the first Imam of Shia Islam. The name al-Dakhil symbolizes his significant role in expanding the Islamic empire during the early period of Islam.