Musannaf Ibn Abi Shayba 9:1278

17181. Abd al-Salam narrated to us, from Ishaq ibn Abd Allah ibn Abi Farwa, from Abu Wahb al-Jayshani, from Abu Khirash al-Ru'ayni, from al-Daylami, who said: I came to the Prophet, may Allah bless him and grant him peace, and I had two sisters whom I had married during the Jahiliyyah. He said: "When you return, divorce one of them."