حَدَّثَنِي عُبَيْدُ اللَّهِ بْنُ مُوسَى، عَنِ الأَعْمَشِ، عَنْ أَبِي ظَبْيَانَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ {كَمَا أَنْزَلْنَا عَلَى الْمُقْتَسِمِينَ} قَالَ آمَنُوا بِبَعْضٍ وَكَفَرُوا بِبَعْضٍ، الْيَهُودُ وَالنَّصَارَى.
Narrated Ibn `Abbas concerning:
"As We have sent down (the Scripture) on those who are divided (Jews and Christians)." (15:90) They believed in part of it and disbelieved in the other, (and they) are the Jews and the Christians.
Reference: Sahih al-Bukhari
USC-MSA web (English) : Vol. 6, Book 60, Hadith 229
Arabic : Book 65, Hadith 4706