Source, in full
Hillary's comment to George Lowe, after his successful ascent of Mt Everest, as he and Tenzing Norgay were descending from the summit. (29 May 1953); as recounted in Nothing Venture, Nothing Win (1975) Ch. 10; also recounted as "Well George, we’ve knocked the bastard off." as quoted by Jan Morris in "Edmund Hillary and Tenzing Norgay" for Time magazine (14 June 1999)