Sliman Ben Ibrahim,
The Life of Mohammad, the Prophet of Allah
“ At Makkah, prayers are said in the vast quadrangular courtyard surrounding the Ka'bah; the ethereal vault of heaven takes the place of the masonry work of chapel roofs and, purified from all its mists, it opens to souls thirsting for ideal good, its lapis-lazuli depths, more vertiginous here than in any other part of the world. At Makkah, nothing is worshipped except Allah, the Chosen One, and pilgrims seek the remembrance of Abraham and Mohammad for no other reason than to strengthen the fervour of their faith by following the Prophet's example. ”
