"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.'"  

إِنْ رَاجَعْتَهَا كَانَتْ عِنْدَكَ عَلَى وَاحِدَةٍ قَضَى بِذَلِكَ رَسُولُ اللَّهِ ﷺ خَالَفَهُ مَعْمَرٌ  

"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.'"  

عَنْ عَبْدٍ طَلَّقَ امْرَأَتَهُ تَطْلِيقَتَيْنِ ثُمَّ عُتِقَا أَيَتَزَوَّجُهَا قَالَ نَعَمْ قَالَ عَمَّنْ قَالَ أَفْتَى بِذَلِكَ رَسُولُ اللَّهِ ﷺ قَالَ عَبْدُ الرَّزَّاقِ قَالَ ابْنُ الْمُبَارَكِ لِمَعْمَرٍ الْحَسَنُ هَذَا مَنْ هُوَ لَقَدْ حَمَلَ صَخْرَةً عَظِيمَةً