Some companions of Mu'adh ibn Jabal said:
When the Messenger of Allah (ﷺ) intended to send Mu'adh ibn Jabal to the Yemen, he asked: How will you judge when the occasion of deciding a case arises?He replied: I shall judge in accordance with Allah's Book.He asked: (What will you do) if you do not find any guidance in Allah's Book?He replied: (I shall act) in accordance with the Sunnah of the Messenger of Allah (ﷺ).
He asked: (What will you do) if you do not find any guidance in the Sunnah of the Messenger of Allah (ﷺ) and in Allah's Book?
He replied: I shall do my best to form an opinion and I shall spare no effort.
The Messenger of Allah (ﷺ) then patted him on the breast and said: Praise be to Allah Who has helped the messenger of the Messenger of Allah to find something which pleases the Messenger of Allah.
