"My wife and I were slaves, and I divorced her twice, then we were both set free. I asked Ibn 'Abbas and he said: 'If you take her back, you have two divorces left. This is how the Messenger of Allah ruled.'"
Sunan an-Nasa'i Book 27, Hadith 39
← Previous Hadith "The envoy of the Messenger of Allah came to me and said: 'Keep away from your wife.' I said: 'Should I divorce her?' He said: 'No, but do not approach her.'" And he (the narrator) did not mention (the words): "Go to your family."

Sunan an-Nasa'i Book 27, Hadith 38 Next Hadith → "Ibn 'Abbas was asked about a slave who divorced his wife twice, then they were set free; could he marry her? He said: 'Yes.' He said: 'From whom (did you hear that)?' He said: 'The Messenger of Allah issued a Fatwa to that effect.'" (One of the narrators) 'Abdur-Razzaq said: "Ibn Al-Mubarak said to Ma'mar: 'Which Al-Hasan is this? He has taken on a heavy burden.'"

Sunan an-Nasa'i Book 27, Hadith 40