Sri Guru Stotram

gurur brahmā gurur visṇuḥ gururdevo maheśvaraḥ guruḥ sākṣāt parabrahma tasmai śrī gurave namaḥ

Guru is Brahmā . Guru is Visnụ. Guru is the Supreme Lord Śiva. Guru is both manifest Reality and the Absolute. Salutations to that glorious Guru.