Narrated by:`Ikrima
Narrated `Ikrima:Ibn `Abbas said, "How can you ask the people of the Scriptures about their Books while you have Allah's Book (the Qur'an) which is the most recent of the Books revealed by Allah, and you read it in its pure undistorted form?"
حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا حَاتِمُ بْنُ وَرْدَانَ، حَدَّثَنَا أَيُّوبُ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ كَيْفَ تَسْأَلُونَ أَهْلَ الْكِتَابِ عَنْ كُتُبِهِمْ وَعِنْدَكُمْ كِتَابُ اللَّهِ أَقْرَبُ الْكُتُبِ عَهْدًا بِاللَّهِ، تَقْرَءُونَهُ مَحْضًا لَمْ يُشَبْ
Bukhari
Oneness, Uniqueness of Allah (Tawheed) • Hadith 147