The Abbasid Caliphate captured the Qarmatian leadership at the Battle of Hama in Syria, opening the way for the reconquest of Tulunid Egypt.

The Abbasid Caliphate or Abbasid Empire was the third caliphate to succeed the Islamic prophet Muhammad. It was founded by a dynasty descended from Muhammad's uncle, Abbas ibn Abd al-Muttalib, from whom the dynasty takes its name. After overthrowing the Umayyad Caliphate in the Abbasid Revolution of 750 CE (132 AH), they ruled as caliphs based in modern-day Iraq, with Baghdad being their capital for most of their history.

The Qarmatians were a militant Isma'ili Shia movement centred in Al-Ahsa in Eastern Arabia, where they established a religious state in 899 CE. Its members were part of a movement that adhered to a syncretic branch of Sevener Ismaili Shia Islam, and were ruled by a dynasty founded by Abu Sa'id al-Jannabi. They rejected the claim of Fatimid Caliph Abdallah al-Mahdi Billah to imamate and clung to their belief in the coming of the Mahdi, and they revolted against the Fatimid and Abbasid Caliphates.

Battle of Hama may refer to:

• Battle of Hamath, Nebuchadnezzar II of Babylonia defeats the Egyptians
• Battle of Hama (903), Abbasids under Al-Katib defeat Ismailis
• Battle of Hama (1178), Ayyubids under Mengüverish defeat the Crusaders

The Tulunid State, also known as the Tulunid Emirate or The State of Banu Tulun, and popularly referred to as the Tulunids was a Mamluk dynasty of Turkic origin who was the first independent dynasty to rule Egypt, as well as much of Syria, since the Ptolemaic dynasty. They were independent from 868, when they broke away from the central authority of the Abbasid Caliphate, to 905, when the Abbasids restored the Tulunid domains to their control.