The Holy Prophet of Islam (SAW) has said:

"I, the book of Allah and my progeny will be the first to come to the Almighty, the Omnipotent (on the Day of Judgement); then my Ummah will come after us.  Then I will ask: "What did you do with the Book of Allah and my Ahlul-Bait?"

Usool-e-Kaafi
vol. 4  page 400