How could you ask the People of the Book about anything….
Az-Zuhri said that `Ubadydullah bin `Abdullah narrated that Ibn `Abbas (رضي الله عنه) said, “O Muslims! How could you ask the People of the Book about anything, while the Book of Allah (Qur’an) that He revealed to His Prophet is the most recent Book from Him and you still read it fresh and young Allah told you that the People of the Book altered the Book of Allah, changed it and wrote another book with their own hands. They then said, `This book is from Allah,’ so that they acquired a small profit by it. Hasn’t the knowledge that came to you prohibited you from asking them By Allah! We have not seen any of them asking you about what was revealed to you.”
This Hadith was also collected by Al-Bukhari.