Mencius - Book 5, Part 1, Chapter 5D

'Shun assisted Yâo in the government for twenty and eight years; this was more than man could have done, and was from Heaven. After the death of Yâo, when the three years' mourning was completed, Shun withdrew from the son of Yâo to the south of South river. The princes of the kingdom, however, repairing to court, went not to the son of Yâo, but they went to Shun. Litigants went not to the son of Yâo, but they went to Shun. Singers sang not the son of Yâo, but they sang Shun. Therefore I said, "Heaven gave him the throne." It was after these things that he went to the Middle Kingdom, and occupied the seat of the Son of Heaven. If he had, before these things, taken up his residence in the palace of Yâo, and had applied pressure to the son of Yâo, it would have been an act of usurpation, and not the gift of Heaven.

'This sentiment is expressed in the words of The Great Declaration, "Heaven sees according as my people see; Heaven hears according as my people hear."'
~ James Legge translation via nothingistic.org ~

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