The general principle of the Qur'an regarding inheritance rules
is that every relative gets an inheritance in a fair and balanced
manner, regardless of gender, small or old children, or religious
differences. When there is a hadith that explicitly states that
religious differences are a barrier to inheriting each other, it has
implications for inheritance law problems for relatives of
different religions. This study aims to reveal how the inheritance
relationship between religions is for heirs. This research, which
is literature research, is sourced from primary, secondary, and
tertiary legal materials with conceptual and philosophical
approaches and using qualitative descriptive analysis. This study
found that religious differences remained a barrier to
inheritance. However, the obstruction of both parents and
relatives from obtaining an inheritance due to religious
differences does not prevent them from obtaining a share of the
inheritance of the testator through the legal will or wills of
obligatory.