The Musta'lis were the followers of al-Musta'li. Their imamate continued during Fatimid rule in Egypt until it was brought to an end in the year 567/1171. Shortly thereafter, the Bohra sect, following the same school, appeared in India and survives to this day.
MUSTA'LIS
Meaning of MUSTA'LIS in English
Advanced Islamic English dictionary. Расширенный исламский словарь английского языка. 2012