Musaylimah

…Bakr’s strongest opponent, the prophet Musaylimah and his followers in Al-Yamāmah. It culminated in a notoriously bloody battle at ʿAqrabāʾ in eastern Najd (May 633), afterward known as the Garden of Death. The encounter cost the Muslims the lives of many anṣār (“helpers”; Medinan Companions of the Prophet) who were…