Surah An-Nisa, ayah 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 عَلِيمُۢ ١٧٦

Yastaftūnaka qulillāhu yuftīkum fil-kalālati inimru'un halaka laysa lahū waladun walahū ukhtun falahā nisfu mā taraka wahuwa yarithuhā il lam yakul lahā waladun fa in kānatathnatayni falahumath-thuluthāni mimmā taraka wa in kānū ikhwatar rijālan wanisā'an falidh-dhakari mithlu hazzil-unthayayni yubayyinullāhu lakum an tadillū wallāhu bikulli shay'in 'alīm

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.²³⁸ Allāh makes clear to you [His law], lest you go astray. And Allāh is Knowing of all things.