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:16357[Chain 1] Abū Zakariyyā b. Abū Isḥāq > Abū al-ʿAbbās > al-Rabīʿ > al-Shāfiʿī > Yaḥyá b. Ḥassān > al-Layth b. Saʿd [Chain 2] Abū al-ʿAbbās Muḥammad b. Yaʿqūb > Baḥr b. Naṣr > Ibn Wahb > Yūnus Wa-al-Layth > Ibn Shihāb > Saʿīd b. al-Musayyib

[Machine] "He used to say that the value of a slave's intelligence is equivalent to the value of a free man's blood money," Ibn Shihab said, "and there were men who said otherwise, claiming that it is merely a commodity, a statement aligned with the saying of Ibn Wahb."  

البيهقي:١٦٣٥٧وَأَخْبَرَنَا أَبُو زَكَرِيَّا بْنُ أَبِي إِسْحَاقَ ثنا أَبُو الْعَبَّاسِ أنبأ الرَّبِيعُ أنبأ الشَّافِعِيُّ أنبأ يَحْيَى بْنُ حَسَّانَ عَنِ اللَّيْثِ بْنِ سَعْدٍ ح وَأنبأ أَبُو سَعِيدِ بْنُ أَبِي عَمْرٍو ثنا أَبُو الْعَبَّاسِ مُحَمَّدُ بْنُ يَعْقُوبَ ثنا بَحْرُ بْنُ نَصْرٍ ثنا ابْنُ وَهْبٍ أَخْبَرَنِي يُونُسُ وَاللَّيْثُ عَنِ ابْنِ شِهَابٍ عَنْ سَعِيدِ بْنِ الْمُسَيِّبِ

أَنَّهُ كَانَ يَقُولُ عَقْلُ الْعَبْدِ فِي ثَمَنِهِ مِثْلُ عَقْلِ الْحُرِّ فِي دِيَتِهِ قَالَ ابْنُ شِهَابٍ وَكَانَ رِجَالٌ يَقُولُونَ سِوَى ذَلِكَ إِنَّمَا هُوَ سِلْعَةٌ يُقَوَّمُ لَفْظُ حَدِيثِ ابْنِ وَهْبٍ