Mencius - Book 5, Part 2, Chapter 2C

'In a great State, where the territory was a hundred lî square, the ruler had ten times as much income as his Chief ministers; a Chief minister four times as much as a Great officer; a Great officer twice as much as a scholar of the first class; a scholar of the first class twice as much as one of the middle; a scholar of the middle class twice as much as one of the lowest; the scholars of the lowest class, and such of the common people as were employed about the government offices, had for their emolument as much as was equal to what they would have made by tilling the fields.
~ James Legge translation via nothingistic.org ~

Go here to read the introductory post to this serialized version of the Works of Mencius.