The shloka, Gurur Bramha Gurur Vishnu also known as Guru Vandana is a salutation to the Guru or Teacher.

It’s a divine chant that a Shishya (student) recites to express gratitude towards his or her Guru who is Brahma (the Creator), Vishnu (the Maintainer) and Shiva (the Great Lord through whom all things return to their origin).