Abu Dawud Book 12, Hadith Number 2897.

Narated By Buraydah ibn al-Hasib : A man came to the Apostle of Allah (PBUH) and said: I have property left by a man of Azd. I do not find any man of Azd to give it to him. He said: Go and look for man of Azd for a year. He then came to him after one year and said: Apostle of Allah, I did not find any man of Azd to give it to him. He said: Look for a man of Khuza’ah whom you meet first and give it to him. When he turned away, he said; Call the man to me. When he came to him, he said: Look for the leading man of Khuza’ah and give it to him.