Hagarism

'Hagarism,' co-authored by Patricia Crone and Michael Cook, presented a revisionist reconstruction of early Islamic history based on non-Muslim sources and argued for radical reconsideration of traditional accounts.

The book sparked intense scholarly debate and critiques but influenced later historical-critical studies of Islam's origins.

Its thesis challenged Islamic historiography by emphasizing contemporaneous external sources and questioning the later Islamic narrative's reliability.

Though many of its claims have been contested, 'Hagarism' remains notable for stimulating fresh research into early Islamic history.

Patricia Crone's work more broadly has been influential in prompting critical reassessment of source materials and methodologies in the field.