Abu Dawud Book 3, Hadith Number 1626.

Narated By Ziyad ibn al-Harith as-Suda’i : I came to the Apostle of Allah (PBUH) and swore allegiance to him, and after telling a long story he said: Then a man came to him and said: Give me some of the sadaqah (alms). The Apostle of Allah (PBUH) said: Allah is not pleased with a Prophet’s or anyone else’s decision about sadaqat till He has given a decision about them Himself. He has divided those entitled to them into eight categories, so if you come within those categories, I shall give you what you desire.