गुरुःशिवोगुरुर्देवो ।गुरुर्बंधुःशरीरिणां ॥गुरुरात्मागुरुर्जीवो ।गुरोरन्यन्नविद्यते ॥
In plain words
The guru is Śiva, the guru is the god, the guru is the kinsman of those who bear bodies. The guru is the ātman, the guru is the jīva. Other than the guru, nothing is to be found.