Medieval Jerusalem and Islamic Worship treats of the holy sites of the Muslims in Jerusalem and the ceremonies and pilgrimage to these places during the early Muslim period. It is based principally on primary Arabic sources, some of which have been used for the first time. Emphasis is given to the works of 'Literature in Praise of Jerusalem', an important and unique source for the history and topography of the city.

Many of the topics in this book have never been dealt with before, e. g. the detailed description of the first known guide for the Muslim pilgrim to Jerusalem, that dates from the eleventh century, and the supplementary discussion of the sixteenth-century guide. Both guides are still in manuscript and have never been published.