The Prophet ﷺ as saying: A Muslim may not inherit from an infidel nor an infidel from a Muslim.  

عَنِ النَّبِيِّ ﷺ قَالَ لاَ يَرِثُ الْمُسْلِمُ الْكَافِرَ وَلاَ الْكَافِرُ الْمُسْلِمَ  

I said: Messenger of Allah, where will you stay tomorrow ? This (happened) during his Hajj. He replied: Has 'Aqil left any house for us ? He then said: We shall stay at the valley of Banu Kinarah where the Quraish took an oath on unbelief. This refers to al-Muhassab. The reason is that Banu Kinarah made an alliance with the Quraish against Banu Hashim that they would have no marital connections with them, nor will have commercial transactions with them, not will give them any refuge. Al-Zuhri said: Khalf means valley.  

قُلْتُ يَا رَسُولَ اللَّهِ أَيْنَ تَنْزِلُ غَدًا فِي حَجَّتِهِ قَالَ وَهَلْ تَرَكَ لَنَا عَقِيلٌ مَنْزِلاً ثُمَّ قَالَ نَحْنُ نَازِلُونَ بِخَيْفِ بَنِي كِنَانَةَ حَيْثُ تَقَاسَمَتْ قُرَيْشٌ عَلَى الْكُفْرِ يَعْنِي الْمُحَصَّبَ وَذَاكَ أَنَّ بَنِي كِنَانَةَ حَالَفَتْ قُرَيْشًا عَلَى بَنِي هَاشِمٍ أَنْ لاَ يُنَاكِحُوهُمْ وَلاَ يُبَايِعُوهُمْ وَلاَ يُئْوُوهُمْ قَالَ الزُّهْرِيُّ وَالْخَيْفُ الْوَادِي  

The Prophet ﷺ said: people of two different religions would not inherit from one another.  

قَالَ رَسُولُ اللَّهِ ﷺ لاَ يَتَوَارَثُ أَهْلُ مِلَّتَيْنِ شَتَّى  

I heard the Messenger of Allah ﷺ say: Islam increases and does not diminish. He, therefore, appointed a Muslim heir (of a non-Muslim).  

قَالَ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ الإِسْلاَمُ يَزِيدُ وَلاَ يَنْقُصُ فَوَرَّثَ الْمُسْلِمَ  

Mu'adh bought the property of a Jew whose heir was a Muslim. He then narrated from the Prophet ﷺ to the same effect.  

أَنَّ مُعَاذًا أُتِيَ بِمِيرَاثِ يَهُودِيٍّ وَارِثُهُ مُسْلِمٌ بِمَعْنَاهُ عَنِ النَّبِيِّ ﷺ