All perfect praise be to Allah, The Lord of The Worlds, and may His peace and blessings be upon our Prophet Muhammad and upon all of his family and companions.
The inheritance system in Sharia as stated in the Holy Quran and Prophetic Sunnah is completely valid, besides it is being fulfilled at Supreme Judge Department. Further, each Muslim is obliged to accept it since it is one of Allah's ordainments upon humans and whosoever deny any of them is considered a disbeliever, since Lucifer believes in the Existence of Allah; yet he became disbeliever as soon as he denied the ordainment of Allah. And Allah Knows Best.