[Machine] In His saying, "Allah instructs you concerning your children: for the male, what is equal to the share of two females" [Quran 4:11], it is mentioned that inheritance was for the child and the will was for the parents. So, Allah abrogated from that which He preferred and made the share of the male child equal to two females, and He made for the parents one-sixth each, and He made for the husband half or one-fourth, and He made for the wife one-fourth or one-eighth.  

فِي قَوْلِهِ ﷻ {يُوصِيكُمُ اللهُ فِي أَوْلَادِكُمْ لِلذَّكَرِ مِثْلُ حَظِّ الْأُنْثَيَيْنِ} [النساء 11] قَالَ كَانَ الْمِيرَاثُ لِلْوَلَدِ وَكَانَتِ الْوَصِيَّةُ لِلْوَالِدَيْنِ فَنَسَخَ اللهُ مِنْ ذَلِكَ مَا أَحَبَّ فَجَعَلَ لِلْوَلَدِ الذَّكَرِ مِثْلَ حَظِّ الْأُنْثَيَيْنِ وَجَعَلَ لِلْوَالِدَيْنِ السُّدُسَيْنِ وَجَعَلَ لِلزَّوْجِ النِّصْفَ أَوِ الرُّبُعَ وَجَعَلَ لِلْمَرْأَةِ الرُّبُعَ أَوِ الثُّمُنَ  

[Machine] The man inherits from his wife if she does not leave behind a child or a child of the son half. If she leaves behind a male or female child or a child of the son, her husband inherits a quarter of it, and nothing is deducted from that. The woman inherits from her husband if he does not leave behind a child or a child of the quarter. If he leaves behind a child or a child of the son, his wife inherits an eighth of it.  

يَرِثُ الرَّجُلُ مِنِ امْرَأَتِهِ إِذَا هِيَ لَمْ تَتْرُكْ وَلَدًا وَلَا وَلَدَ ابْنٍ النِّصْفَ فَإِنْ تَرَكَتْ وَلَدًا أَوْ وَلَدَ ابْنٍ ذَكَرًا أَوْ أُنْثَى وَرِثَهَا زَوْجُهَا الرُّبُعَ لَا يَنْقُصُ مِنْ ذَلِكَ شَيْءٌ وَتَرِثُ الْمَرْأَةُ مِنْ زَوْجِهَا إِذَا هُوَ لَمْ يَتْرُكْ وَلَدًا وَلَا وَلَدَ ابْنٍ الرُّبُعَ فَإِنْ تَرَكَ وَلَدًا أَوْ وَلَدَ ابْنٍ وَرِثَتْهُ امْرَأَتُهُ الثُّمُنَ