"The Messenger of Allah delivered a Khutbah and said: 'Allah has given every person who has rights his due, and there is no bequest to an heir.'" (Using translation from Nasāʾī 3641)  

خَطَبَ رَسُولُ اللهِ ﷺ فَقَالَ «إِنَّ اللهَ قَدْ أَعْطَى كُلَّ ذِي حَقٍّ حَقَّهُ فَلَا وَصِيَّةَ لِوَارِثٍ»  

"Allah has given each person a share of the inheritance, and it is not permissible to give bequests to an heir." (Using translation from Nasāʾī 3642)  

أَنَّهُ شَهِدَ رَسُولَ اللهِ ﷺ خَطَبَ النَّاسَ عَلَى رَاحِلَتَهُ وَإِنَّهَا لَتَقْصَعُ بِجَرَّتِهَا وَإِنَّ لُعَابَهَا لَيَسِيلُ فَقَالَ رَسُولُ اللهِ ﷺ فِي خُطْبَتِهِ «إِنَّ اللهَ قَدْ قَسَّمَ لِكُلِّ إِنْسَانٍ نَصِيبَهُ مِنَ الْمِيرَاثِ فَلَا يَجُوزُ لِوَارِثٍ وَصِيَّةٌ»  

I heard the Messenger of Allah ﷺ say: Allah has appointed for everyone who has a right what is due to him, and no bequest must be made to an heir. (Using translation from Abū Dāʾūd 2870)   

قَالَ رَسُولُ اللهِ ﷺ «إِنَّ اللهَ قَدْ أَعْطَى كُلَّ ذِي حَقٍّ حَقَّهُ فَلَا وَصِيَّةَ لِوَارِثٍ»