So the Messenger of Allah (ﷺ) called him and said: Allah is the judge (al-Hakam), and to Him judgment belongs. Why are you given the kunyah Abu lHakam?
He replied: When my people disagree about a matter, they come to me, and I decide between them, and both parties are satisfied with my decision.
He said: How good this is! What children have you? He replied: I have Shurayh, Muslim and Abdullah. He asked; Who is the oldest of them? I replied: Shurayh. He said: Then you are Abu Shurayh.
Abu Dawud said: This is Shuraib who broke the chain, and who entered Tustar.
Abu Dawud said: I have been told that Shuraib broke the gate of Tustar, and he entered it through tunnel.
In-book : Book 43, Hadith 183
English translation : Book 42, Hadith 4937