[Machine] I bear witness that Muslims have wronged me and if this is true, it is because he refused to repent for his accusations and persisted in them. If he had repented, they would not have classified him as a sinner. Allah knows best. Ash-Shafi'i (may Allah have mercy on him) said: I have heard from Ibn Abbas that he allowed the testimony of the accuser if he repented.  

أَشْهِدْ غَيْرِي فَإِنَّ الْمُسْلِمِينَ قَدْ فَسَّقُونِي وَهَذَا إِنْ صَحَّ فَلِأَنَّهُ امْتَنَعَ مِنْ أَنْ يَتُوبَ مِنْ قَذْفِهِ وَأَقَامَ عَلَيْهِ وَلَوْ كَانَ قَدْ تَابَ مِنْهُ لَمَا أَلْزَمُوهُ اسْمَ الْفِسْقِ وَاللهُ أَعْلَمُ قَالَ الشَّافِعِيُّ رَحِمَهُ اللهُ وَبَلَغَنِي عَنِ ابْنِ عَبَّاسٍ أَنَّهُ كَانَ يُجِيزُ شَهَادَةَ الْقَاذِفِ إِذَا تَابَ