Both John Locke and Thomas Jefferson wrote about the natural rights of man. In which document are these unalienable rights specifically mentioned
Declaration of Independence: "life, liberty, and the pursuit of happiness"
In the Declaration of Independence these "inalienable rights" are specifically mentioned.
Specifically, The Declaration of Independence states "We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness."