“The pilgrimage to Mecca, known as the Hajj, is a religious obligation that every orthodox Muslim fulfills, if able, at least once in his or her lifetime.
The Holy Quran says it, "Pilgrimage to the House [of God built by the prophet Abraham] is a duty men owe to God; those who are able, make the journey." (3:97)

Allah said: "And proclaim the pilgrimage among men; they will come to you on foot and upon each lean camel, they will come from every deep ravine" (22:27).

Every one of the thousands at the airport, about to leave for Jeddah, was dressed this way. You could be a king or a peasant and no one would know. Some powerful personages, who were discreetly pointed out to me, had on the same thing I had on. Once thus dressed, we all had begun intermittently calling out "Labbayka! (Allahumma) Labbayka!" (Here I come, O Lord!) Packed in the plane were white, black, brown, red, and yellow people, blue eyes and blond hair, and my kinky red hair -- all together, brothers! All honoring the same God, all in turn giving equal honor to each other….

That is when I first began to reappraise the "white man." It was when I first began to perceive that "white man," as commonly used, means complexion only secondarily; primarily it described attitudes and actions. In America,"white man" meant specific attitudes and actions toward the black man, and toward all other non-white men. But in the Muslim world, I had seen that men with white complexions were more genuinely brotherly than anyone else had ever been. That morning was the start of a radical alteration in my whole outlook about "white" men.”

Quoted from Lal, K. S. (1990). Indian muslims: Who are they. Chapter 2.
Fatawa-i-Jahandari

Letter (March 1890), published in The Collected Letters of Joseph Conrad, edited by Frederick R. Karl and Laurence Davies, Vol. 1, p. 43 ISBN 0521242169

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 583.

The Plan of Delano (1965)

Source: Why We Fail as Christians (1919), p. 32
Context: Tolstoy was occupied by a continuous pilgrimage to all fountains of knowledge, to all systems of religions, and to all manner of men in pursuit of Truth. He could not find it in the Church, nor in Science, nor in Art, nor among the rich, nor among the learned. But he did find it in the lives of the lowly and the suffering—in the Doukhobors, in Soutaieff, in Bóndaref, and in Jesus the carpenter.

[2019, Esoterism as Principle and as Way, World Wisdom, 139, 978-1-93659765-9]
Spiritual life, Trials

Published in 1755, Hymns: "O God of Bethel", Chambers Dictionary of Quotations, p. 278.

Recapitulation
1790s, The Age of Reason, Part I (1794)