Ismailis are a Muslim community that originated from the Shia sect of Islam. They are known for their strong emphasis on ethical values, spiritualism, and philanthropy. There are various synonyms for the term Ismailis, including Musta'li, Tayyibi, and Hafizi, all of which refer to distinct subdivisions of the community. The Musta'li Ismailis trace their lineage to Imam Al-Mustansir billah, while the Tayyibi Ismailis follow the leadership of their da'i al-mutlaq. Hafizi Ismailis, on the other hand, hold a different succession line and do not accept the authority of the Aga Khan. Despite their differences, Ismailis share a common devotion to their faith and a commitment to serving humanity.