Narrated ad-Dahhak bin Fairuz ad-Dailami on the authority on the authority of his father (RA):

I said, "O Allah's Messenger (ﷺ) , I have accepted Islam and I am married to two sisters." Allah's Messenger (ﷺ)then said, "Divorce whichever of them you wish." [Reported by Ahmad and al-Arba'a, except an-Nasa'i. Ibn Hibban, ad-Daraqutni and al-Baihaqi graded it Sahih (authentic) but al-Bukhari considered it defective].

وَعَنِ اَلضَّحَّاكِ بْنِ فَيْرُوزَ الدَّيْلَمِيِّ , عَنْ أَبِيهِ قَالَ : { قُلْتُ : يَا رَسُولَ اَللَّهِ ! إِنِّي أَسْلَمْتُ وَتَحْتِي أُخْتَانِ , فَقَالَ رَسُولُ اَللَّهِ ‏- صلى الله عليه وسلم ‏-" طَلِّقْ أَيَّتَهُمَا شِئْتَ } رَوَاهُ أَحْمَدُ , وَالْأَرْبَعَةُ إِلَّا النَّسَائِيَّ , وَصَحَّحَهُ اِبْنُ حِبَّانَ , وَاَلدَّارَقُطْنِيُّ , وَالْبَيْهَقِيُّ , وَأَعَلَّهُ اَلْبُخَارِيُّ [1]‏ .‏