All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His slave and messenger.
We have previously highlighted the un-Islamic beliefs and esoteric (Baatiniyyah) interpretations of the Bohras in Fatwa 89255.
As for the inheritance of a person who hold such esoteric beliefs and doctrines that contradict Islam, he is considered a non-Muslim; such an act takes him out of the fold of Islam. Therefore, he is not entitled to inherit from his Muslim relatives and they do not inherit from him as well because disparity in religion is one of the impediments of inheritance. A Muslim cannot inherit from a non-Muslim relative nor can a non-Muslim inherit from his Muslim relative. Usaamah ibn Zayd reported that the Prophet, sallallaahu ‘alayhi wa sallam, said: “A Muslim is not allowed to inherit (anything from a) non-Muslim and a non-Muslim is not allowed to inherit from a Muslim”. [Al-Bukhari, Muslim and others]
Allaah Knows best.