Fifty Stanzas on Following a Teacher
Fifty Verses on the Lama (Wyl. bla ma lnga bcu pa), also known as the Fifty Stanza on Guru Devotion is a text composed by Ashvaghosha that explains how to relate to one's master.
External Links
http://viewonbuddhism.org/resources/50_verses_guru_devotion.html
http://www.lamayeshe.com/index.php?sect=article&id=373