Surah An-Nisa, Verse 176

يَسۡتَفۡتُونَكَ قُلِ ٱللَّهُ يُفۡتِيكُمۡ فِي ٱلۡكَلَٰلَةِۚ إِنِ ٱمۡرُؤٌاْ هَلَكَ لَيۡسَ لَهُۥ وَلَدٞ وَلَهُۥٓ أُخۡتٞ فَلَهَا نِصۡفُ مَا تَرَكَۚ وَهُوَ يَرِثُهَآ إِن لَّمۡ يَكُن لَّهَا وَلَدٞۚ فَإِن كَانَتَا ٱثۡنَتَيۡنِ فَلَهُمَا ٱلثُّلُثَانِ مِمَّا تَرَكَۚ وَإِن كَانُوٓاْ إِخۡوَةٗ رِّجَالٗا وَنِسَآءٗ فَلِلذَّكَرِ مِثۡلُ حَظِّ ٱلۡأُنثَيَيۡنِۗ يُبَيِّنُ ٱللَّهُ لَكُمۡ أَن تَضِلُّواْۗ وَٱللَّهُ بِكُلِّ شَيۡءٍ عَلِيمُۢ١٧٦

yastaftūnaka quli l-lahu yuf'tīkum fī l-kalālati ini im'ru-on halaka laysa lahu waladun walahu ukh'tun falahā niṣ'fu mā taraka wahuwa yarithuhā in lam yakun lahā waladun fa-in kānatā ith'natayni falahumā l-thuluthāni mimmā taraka wa-in kānū ikh'watan rijālan wanisāan falildhakari mith'lu ḥaẓẓi l-unthayayni yubayyinu l-lahu lakum an taḍillū wal-lahu bikulli shayin ʿalīmun

They request from you a [legal] ruling. Say, "Allāh gives you a ruling concerning one having neither descendants nor ascendants [as heirs]." If a man dies, leaving no child but [only] a sister, she will have half of what he left. And he inherits from her if she [dies and] has no child. But if there are two sisters [or more], they will have two thirds of what he left. If there are both brothers and sisters, the male will have the share of two females. Allāh makes clear to you [His law], lest you go astray. And Allāh is Knowing of all things.