It is a plant used in the production of poppy or hashish (cannabis), edible oil and medicinal drugs, and is also used in the production of opium derivatives such as morphine, codeine, narcotine and papaverine. Descriptions such as hashâşiyyûn or hashâşiyyîn are made to mean hashâşîs for those who use drugs produced from these substances. The sect emerged as a result of a religious faction within the Fatimid state in the 11th century, based on the principles of the Ismaili sect, hashhashiyyn as a terminological term, the Ismaili / Batini movement that came into being on the basis of Shi'ite thought in history and eliminated the murder by massacring its enemies in this way. is a terrorist organization formed by the Nizarî-İsmailî fedâîs, which turned it into a systematic attack tool.Among the most important attacks are the killing of Great Seljuk officials, Abbasi religious officials and some Crusader leaders, especially Nizamülmülk, and the assassination attempt on Saladin Eyyubi. Sources: Security Terms Glossary, (T.R. Ministry of Interior Undersecretariat of Public Order and Security, Ankara), Turkish Language Institution Dictionary, Türkiye Diyanet Foundation Encyclopedia of Islam