The IsmÄʿīlÄ« (Urdu: اسماعیلی IsmÄʿīlÄ«, Arabic: الإسماعيليون al-IsmÄʿīliyyÅ«n; Persian: اسماعیلیان EsmÄʿīliyÄn) branch of Islam is the second largest part of the ShÄ«'a community, after the Twelvers (IthnÄÊ¿ashariyya). The IsmÄʿīlÄ« get their name from their acceptance of IsmÄʿīl ibn JaÊ¿far as the successor-ImÄm to JaÊ¿far aá¹£-á¹¢Ädiq, wherein they differ from the IthnÄÊ¿ashariyya, who accept Musa al-Kazim, younger brother of Ismail, as their Imam.