صحيح البخاري Sahih Bukhari كتاب الفرائض The Book of Al-Farad (The Laws of Inheritance)
بَابُ مِيرَاثِ الأَخَوَاتِ مَعَ الْبَنَاتِ عَصَبَةً:

(12) Chapter. The sisters (of the deceased) share the inheritance with the daughters (of the deceased), the sisters being treated as the Asaba.

2 hadith
Hadith 6741
حَدَّثَنَا بِشْرُ بْنُ خَالِدٍ ، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ ، عَنْ شُعْبَةَ ، عَنْ سُلَيْمَانَ ، عَنْ إِبْرَاهِيمَ ، عَنْ الْأَسْوَدِ ، قَالَ : " قَضَى فِينَا مُعَاذُ بْنُ جَبَلٍ عَلَى عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : النِّصْفُ لِلْابْنَةِ وَالنِّصْفُ لِلْأُخْتِ " . ثُمَّ قَالَ سُلَيْمَانُ : قَضَى فِينَا وَلَمْ يَذْكُرْ عَلَى عَهْدِ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ .
Narrated Al-Aswad: Mu`adh bin Jabal gave this verdict for us in the lifetime of Allah's Apostle. One-half of the inheritance is to be given to the daughter and the other half to the sister. Sulaiman said: Mu`adh gave a verdict for us, but he did not mention that it was so in the lifetime of Allah's Apostle.
Hadith Reference Sahih Bukhari / The Book of Al-Farad (The Laws of Inheritance) / Hadith: 6741
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة
Hadith 6742
حَدَّثَنَا عَمْرُو بْنُ عَبَّاسٍ ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ ، حَدَّثَنَا سُفْيَانُ ، عَنْ أَبِي قَيْسٍ ، عَنْ هُزَيْلٍ ، قَالَ : قَالَ عَبْدُ اللَّهِ : " لَأَقْضِيَنَّ فِيهَا بِقَضَاءِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَوْ قَالَ قَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ : للْابْنَةِ النِّصْفُ ، وَلِابْنَةِ الِابْنِ السُّدُسُ ، وَمَا بَقِيَ فَلِلْأُخْتِ " .
Narrated Huzail: `Abdullah said, "The judgment I will give in this matter will be like the judgment of the Prophet, i.e. one-half is for the daughter and one-sixth for the son's daughter and the rest of the inheritance for the sister."
Hadith Reference Sahih Bukhari / The Book of Al-Farad (The Laws of Inheritance) / Hadith: 6742
Hadith Grading محدثین: أحاديث صحيح البخاريّ كلّها صحيحة