Sunan an-Nasa'i, Book 45, Hadith 101 (In-Book) ⓘ
It was narrated from 'Amr Bin Shu'aib, from his father, that his grandfather said: "The Messenger of Allah said: 'The blood money for Ahl Adh-Dhimmah is half that of the blood money for the Muslims, and they are the Jews and Christians."
أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا عَبْدُ الرَّحْمَنِ، عَنْ مُحَمَّدِ بْنِ رَاشِدٍ، عَنْ سُلَيْمَانَ بْنِ مُوسَى، وَذَكَرَ، كَلِمَةً مَعْنَاهَا عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " عَقْلُ أَهْلِ الذِّمَّةِ نِصْفُ عَقْلِ الْمُسْلِمِينَ " . وَهُمُ الْيَهُودُ وَالنَّصَارَى .
also referenced under: Hadith 4806 (Reference) & Volume 5, Book 45, Hadith 4810 (DarusSalam)