Sahih al-Bukhari 2314
Sahih al-Bukhari · Book 40: Representation, Authorization, Business by Proxy · To depute a person to carry out a punishment
Narrated Zaid bin Khalid and Abu Huraira:
حَدَّثَنَا أَبُو الْوَلِيدِ ، أَخْبَرَنَا اللَّيْثُ ، عَنِ ابْنِ شِهَابٍ ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ ، عَنْ زَيْدِ بْنِ خَالِدٍ ، وَأَبِي، هُرَيْرَةَ رضى الله عنهما عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " وَاغْدُ يَا أُنَيْسُ إِلَى امْرَأَةِ هَذَا، فَإِنِ اعْتَرَفَتْ فَارْجُمْهَا " .
The Prophet (ﷺ) said, "O Unais! Go to the wife of this (man) and if she confesses (that she has committed illegal sexual intercourse), then stone her to death."