Allah’s Apostle (sallallähu alaihi wasallam) said, “Allah said, ‘Spend (O man), and I shall spend on you.”
He also said, “Allah’s Hand is full, and (its fullness) is not affected by the continuous spending night and day.
Do you see what He has spent since He created the Heavens and the Earth?
Nevertheless, what is in His Hand is not decreased, and His Throne was over the water; and in His Hand there is the balance (of justice) whereby He raises and lowers (people).”

[Bukhari Book:60 No:206]