Quran

لِّلرِّجَالِ نَصِيبٞ مِّمَّا تَرَكَ ٱلۡوَٰلِدَانِ وَٱلۡأَقۡرَبُونَ وَلِلنِّسَآءِ نَصِيبٞ مِّمَّا تَرَكَ ٱلۡوَٰلِدَانِ وَٱلۡأَقۡرَبُونَ مِمَّا قَلَّ مِنۡهُ أَوۡ كَثُرَۚ نَصِيبٗا مَّفۡرُوضٗا

For men is a share of what the parents and close relatives leave, and for women is a share of what the parents and close relatives leave, be it little or much - an obligatory share