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.
bayhaqi:17113Abū al-Ḥasan al-Raffāʾ > ʿUthmān b. Muḥammad b. Bishr > Ismāʿīl al-Qāḍī > Ibn Abū Ūways > Ibn Abū al-Zinād from his father

[Machine] About the scholars who reach their conclusion from the people of Medina, they used to say that it is not appropriate for anyone to establish any of the prescribed punishments (hudud) without the authority (sultan), except that a man can establish the punishment of adultery on his male and female slaves.  

البيهقي:١٧١١٣أَخْبَرَنَا أَبُو الْحَسَنِ الرَّفَّاءُ أنبأ عُثْمَانُ بْنُ مُحَمَّدِ بْنِ بِشْرٍ ثنا إِسْمَاعِيلُ الْقَاضِي ثنا ابْنُ أَبِي أُوَيْسٍ ثنا ابْنُ أَبِي الزِّنَادِ عَنْ أَبِيهِ

عَنِ الْفُقَهَاءِ الَّذِينَ يَنْتَهِي إِلَى قَوْلِهِمْ مِنْ أَهْلِ الْمَدِينَةِ كَانُوا يَقُولُونَ لَا يَنْبَغِي لِأَحَدٍ أَنْ يُقِيمَ شَيْئًا مِنَ الْحُدُودِ دُونَ السُّلْطَانِ إِلَّا أَنَّ لِلرَّجُلِ أَنْ يُقِيمَ حَدَّ الزِّنَا عَلَى عَبْدِهِ وَأَمَتِهِ