Abu Al-’Aaliyah reports that a man once asked `Ubay bin K`ab — may Allah be pleased with him — for advice.

He said:
  • “Take the Book of Allah as your leader (imam) and be pleased with it as a judge and ruler.
  • It is what your Messenger left amongst you.
  • It will be an intercessor for you.
  • It is to be obeyed.
  • It is a witness never doubted.
  • In it is a mention of you and those before you,
  • and judgment for whatever happens amongst you.
  • And in it is news about you and whatever will come after you.”
Siyar a’laam an-Nubalaa’