Basus War

BelligerentsBanu TaghlibBanu Bakr and all its subdivisions, including the Banu ShaybanHimyarite KingdomCommanders and leadersAbu Layla al-Muhalhel
†
Abu Nuwayra al-Taghlibi†Jassas ibn Murrah†

Marthad'ilan Yu'nim#
Imru' al-QaysUnits involved Tribal soldiers from Banu Taghlib Tribal soldiers from Banu Bakr At least 500 Himyarite warriors

The Basus War (often written al-Basus War; Arabic: حرب البسوسḥarb al-basūs) is a famous conflict narrative from the corpus of the ayyām al-ʿarab (Days of the Arabs), traditionally dated to late pre-Islamic Arabia and showcasing the rivalry of the tribes of Taghlib and Bakr. In Arabic historical and literary tradition, it is portrayed as a forty-year tribal war triggered by the killing of a camel belonging to a woman named Basus. The story occupies an important place in Arabic literary culture as a famous aphorism warning against vendetta, kin-violence, and escalation.

Modern scholarship, however, increasingly treats the Basus War not as a single, prolonged historical war but as a composite and progressively elaborated narrative, likely originating in a limited skirmish, later expanded in scope, duration, and moral significance through oral poetry, genealogical rivalry, and adab literature. Early sources differ substantially on the sequence of events, the identities of participants, and even the basic motivations involved, suggesting that the narrative stabilized only gradually over time.