Mencius - Book 4, Part 1, Chapter 2B

'A ruler who carries the oppression of his people to the highest pitch, will himself be slain, and his kingdom will perish. If one stop short of the highest pitch, his life will notwithstanding be in danger, and his kingdom will be weakened. He will be styled "The Dark," or "The Cruel," and though he may have filial sons and affectionate grandsons, they will not be able in a hundred generations to change the designation.

'This is what is intended in the words of the Book of Poetry,

"The beacon of Yin is not remote,
It is in the time of the (last) sovereign of Hsiâ."'

~ James Legge translation via nothingistic.org ~Go here to read the introductory post to this serialized version of the Works of Mencius.