Prescribed Punishments (Kitab Al-Hudud)
Dawud :: Book 38 : Hadith 4420
Narrated Buraydah ibn al-Hasib:
We, the Companions of the Apostle of Allah (peace_be_upon_him), used to talk mutually: Would that al-Ghamidiyyah and Ma'iz ibn Malik had withdrawn after their confession; or he said: Had they not withdrawn after their confession, he would not have pursued them (for punishment).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).