Close Relationships is Geert Jan van Gelder's groundbreaking and comprehensive study of the diverse facts and opinions concerning incest and close-kin marriage found in literary and non-literary pre-modern Arabic texts. The pre-Islamic Arabs knew about the dangers of inbreeding; the Qur'an formulates the basic principles of marriage impediments in Islam, which were elaborated by generations of jurists. Incest is a motif found in lampoons, anecdotes, stories, legends, dream interpretation, and polemics with other religions, in particular the Zoroastrians, who in pre-Islamic times allegedly recommended next-of-kin marriage. Many of the relevant passages are presented as English translations in this richly documented book.

Geert Jan van Gelder is Laudian Professor of Arabic at the University of Oxford. He is a specialist in mediaeval Arabic belles-lettres and has published several books and many articles on Arabic poetry, poetics and prose genres.