Answer
Quraysh, the prominent Arab tribe from which Abd al-Rahman III traced his lineage, held a significant position in pre-Islamic and early Islamic history. They were the custodians of the Kaaba, the sacred shrine in Mecca, and played a central role in the rise of Islam. Abd al-Rahman III's claim to Qurayshi ancestry enhanced his legitimacy as the Umayyad caliph of Córdoba and strengthened his political authority in al-Andalus.