Arslan Baba stands at the threshold of Aḥmad Yasawī's sacred biography. In the best-known devotional account, he carries a trust associated with the Prophet and transmits it to the young Yasawī. This story does not function like a modern dated biography: it expresses how Yasawi communities understood blessing, fidelity, and the passage of spiritual responsibility across generations.
His remembered landscape lies near Otrar, one of the great meeting places of oasis and steppe. The mausoleum identified with him became an enduring station of pilgrimage, often visited before the shrine of Yasawī at Turkistan. The ritual geography is historically real even where the earliest layers of the master's life remain beyond documentary recovery.