Sahih Bukhari Volume 004, Book 055, Hadith Number 604.
Narated By Abu Huraira : The Prophet said, "While Job was naked, taking a bath, a swarm of gold locusts fell on him and he started collecting them in his garment. His Lord called him, 'O Job! Have I not made you rich enough to need what you see? He said, 'Yes, O Lord! But I cannot dispense with your Blessing.'"