Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
Bukhari :: Book 6 :: Volume 60 :: Hadith 12
Narrated Abu Huraira:
The people of the Scripture (Jews) used to recite the Torah in Hebrew and they used to explain it in Arabic to the Muslims. On that Allah's Apostle said, "Do not believe the people of the Scripture or disbelieve them, but say:-- "We believe in Allah and what is revealed to us." (2.136)