I came to the Prophet ﷺ and said, "Messenger of Allah, I have embraced Islam, and I am married to two sisters."The Messenger of Allah ﷺ replied, "Choose whichever of them you wish."
حدثنا قتيبة حدثنا ابن لهيعة عن أبي وهب الجيشاني أنه سمع
أتيت النبي ﷺ فقلت يا رسول الله إني أسلمت وتحتي أختان فقال رسول الله ﷺ اختر أيتهما شئت
[Hasan] Abu Dawud also narrated it in the Book of Divorce, chapter on one who embraces Islam while having more than four wives or two sisters, no. 2243, and Ibn Majah, no. 1950, from the hadith of Abu Wahb through this route, and Ibn Hibban graded it sahih, no. 1276. See also the following hadith.