गूढोदृढश्चप्रीतश्च ।मौनेनसुसमाहितः ॥सकृत्कामगतोवापि ।पंचधागुरुरीरितः ॥
In plain words
The hidden one, the firm, the pleased, the one wholly gathered in by silence, and the one who comes but once, as he wills: the guru is declared to be of five kinds.