The IsmÄÊ¿Ä«lÄ« (Urdu: اسماعیلی IsmÄÊ¿Ä«lÄ«, Arabic: الإسماعيليون al-IsmÄÊ¿Ä«liyyÅ«n; Persian: اسماعیلیان EsmÄÊ¿Ä«liyÄn) branch of Islam is the second largest part of the ShÄ«'a community, after the Twelvers (IthnÄÊ¿ashariyya). The IsmÄÊ¿Ä«lÄ« get their name from their acceptance of IsmÄÊ¿Ä«l 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.