The Battle of Inab, also called Battle of Ard al-Htim or Fons Muratus, was fought on 29 June 1149, during the Second Crusade. The Zengid army of Atabeg Nur ad-Din Zangi destroyed the combined army of Prince Raymond of Poitiers and the Assassins of Ali ibn-Wafa. The Principality of Antioch was subsequently pillaged and reduced in size as its eastern border was pushed west.

Raymond of Poitiers (c. 1105–29 June 1149) was Prince of Antioch from 1136 to 1149. He was the younger son of William IX, Duke of Aquitaine, and his wife Philippa, Countess of Toulouse, born in the very year that his father the Duke began his infamous liaison with Dangereuse de Chatelherault.