Abu Khirash narrates from al-Daylami or Ibn al-Daylami (may Allah be pleased with him) that he said: I accepted Islam while I had two sisters as wives. When I asked the Prophet (peace and blessings be upon him), he (peace and blessings be upon him) said: "Keep whichever of them you wish, and leave whichever you wish."
Ishaq bin Abdullah bin Abi Farwah added Abu Khirash in its chain, and Ishaq is not used as evidence; the narration of Yazid bin Abi Habib is more authentic, and Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النكاح / 14060