In this, one of his last works, Martin Lings discusses the significance of the pilgrimage to Mecca, made annually by several million Muslims, in the light of the tradition of Abraham. Drawing upon his own experience of performing the pilgrimage first in 1946 and then in 1978, as well referring to the traditional sources, he considers the timeless spiritual meaning of the Hajj, which was proclaimed and established by Abraham and Ishmael and renewed by the Prophet Muhammad, in the context of its long history and comes to some surprising conclusions.