[Machine] I embraced Islam and I had two sisters under my guardianship. So, I asked the Prophet ﷺ about it, and he instructed me to keep whichever I wanted and leave the other. This is mentioned in the isnad (chain of narration) by Isḥāq ibn ʿAbdullah ibn Abi Farwah, which Aba Kharash has also reported. However, Isḥāq's narration is not considered reliable. The narration by Yazid ibn Abi Habib is more authentic. And Allah knows best.  

أَسْلَمْتُ وَتَحْتِي أُخْتَانِ فَسَأَلْتُ النَّبِيَّ ﷺ فَأَمَرَنِي أَنْ أُمْسِكَ أَيَّتَهُمَا شِئْتُ وَأُفَارِقَ الْأُخْرَى زَادَ إِسْحَاقُ بْنُ عَبْدِ اللهِ بْنِ أَبِي فَرْوَةَ فِي إِسْنَادِهِ أَبَا خِرَاشٍ وَإِسْحَاقُ لَا يُحْتَجُّ بِهِ وَرِوَايَةُ يَزِيدَ بْنِ أَبِي حَبِيبٍ أَصَحُّ وَاللهُ أَعْلَمُ