The Kitáb-i-Aqdas - The Most Holy Book
Index term: pilgrimage enjoined, under Men
Question: Again inquiry hath been made about the pilgrimage.
Answer: By pilgrimage to the sacred House, which is enjoined upon men, is intended both the Most Great House in Baghdád and the House of the Primal Point in Shíráz; pilgrimage to either of these Houses sufficeth. They may thus make pilgrimage to whichever lieth nearer to the place where they reside.