The first attestation of the term "hashish" is in a pamphlet published in Cairo in 1123 CE, accusing Nizari Muslims of being "hashish-eaters". The cult of Nizari militants which emerged after the fall of the Fatimid Caliphate is commonly called the sect of the Assassins -- a corruption of "hashishin," Arabic for "hashish-smokers." The 13th-century Ibn Taymiyyah prohibited the use of hashish; he mentioned that it was introduced to Levant with the Mongol invasion (throughout the 13th century). Smoking did not become common in the Old World until after the introduction of tobacco; until the 1500s, hashish was consumed as an edible in the Muslim world.