Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
suyuti:3651a –

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." (Using translation from Bukhārī 2314)   

السيوطي:٣٦٥١a –

("أغْدُ يا أُنَيسُ على امرأةِ هَذَا، فإِن اعترفت فارْجُمْهَا" .  

[خ] البخاري [م] مسلم عن أبي هريرة وزيد بن خالد الجهنى)

See similar narrations below:

Collected by Bukhārī
bukhari:2314 – Abū al-Walīd > al-Layth > Ibn Shihāb > ʿUbaydullāh > Zayd b. Khālid And ʾAbī Hurayrah

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."  

البخاري:٢٣١٤ – حَدَّثَنَا أَبُو الْوَلِيدِ أَخْبَرَنَا اللَّيْثُ عَنِ ابْنِ شِهَابٍ عَنْ عُبَيْدِ اللَّهِ عَنْ زَيْدِ بْنِ خَالِدٍ وَأَبِي هُرَيْرَةَ ؓ

عَنِ النَّبِيِّ ﷺ قَالَ وَاغْدُ يَا أُنَيْسُ إِلَى امْرَأَةِ هَذَا فَإِنِ اعْتَرَفَتْ فَارْجُمْهَا