The Fourfold prerequisites of the Vivekachudamani were important concepts in early Theosophy :
Laura C. Holloway & Mohini Chatterji. Man: Fragments of Forgotten History. London: Reeves & Turner, 1885.
Qualifications for Chelaship, Theosophist, September, 1884:
Atmanatma-Viveka, “Discrimination of Spirit and Not-Spirit”, Translated by Mohini M. Chatterji
Even Krishnamurti's At the Feet of the Master is based on these notions.