حَدَّثَنَا أَحْمَدُ بْنُ إِسْحَاقَ الأَهْوَازِيُّ، حَدَّثَنَا أَبُو أَحْمَدَ، حَدَّثَنَا بَشِيرُ بْنُ الْمُهَاجِرِ، حَدَّثَنِي عَبْدُ اللَّهِ بْنُ بُرَيْدَةَ، عَنْ أَبِيهِ، قَالَ كُنَّا أَصْحَابَ رَسُولِ اللَّهِ نَتَحَدَّثُ أَنَّ الْغَامِدِيَّةَ وَمَاعِزَ بْنَ مَالِكٍ لَوْ رَجَعَا بَعْدَ اعْتِرَافِهِمَا أَوْ قَالَ لَوْ لَمْ يَرْجِعَا بَعْدَ اعْتِرَافِهِمَا لَمْ يَطْلُبْهُمَا وَإِنَّمَا رَجَمَهُمَا عِنْدَ الرَّابِعَةِ ‏.‏

Narrated Buraydah ibn al-Hasib: We, the Companions of the Messenger of Allah (PBUH), used to talk mutually: Would that al-Ghamidiyyah and Ma'iz ibn Malik had withdrawn after their confession; or he said: Had they not withdrawn after their confession, he would not have pursued them (for punishment). He had them stoned after the fourth (confession). Translation Not Available

Book Ref: Sunan Abi Dawud Book 40 Hadith 4434
Web Ref:  Sunan Abi Dawud Book 39 Hadith 4420