Guru (preceptor)

"Guru" here names not a single deity but the guru principle itself, the teacher venerated in Hindu tradition as embodying, and mediating, the divine for the disciple, honoured above all on the festival of Guru Purnima.

The principle is best known through its own defining shloka, "Gurur Brahma Gurur Vishnu Gurur Devo Maheshwara, Gurur Sakshaat Param Brahma," "the guru is Brahma, the guru is Vishnu, the guru is Shiva, the guru is truly the Supreme Absolute itself."

The principle has no single fixed image; it is instead represented through the person of one's own living or departed teacher, and symbolically through the worship of Vyasa, traditional compiler of the Vedas and the Mahabharata, honoured on Guru Purnima as the archetypal guru.

The verse equating the guru with Brahma, Vishnu and Shiva reads the teacher's role through the three great divine functions: as Brahma creates, the guru creates understanding in the disciple; as Vishnu preserves, the guru protects and sustains the disciple's good qualities; as Shiva destroys, the guru destroys the disciple's ignorance and vice. Guru Purnima itself is traditionally dated to the day Vyasa was born, or to the day the Buddha delivered his first sermon at Sarnath, depending on the tradition observing it.

As a principle rather than a person, it has no genealogy of its own; it is instantiated afresh in every guru-disciple (guru-shishya) relationship across Hindu, Jain, Buddhist and Sikh tradition alike.

Celebrated on the full moon of the month of Ashadha (June-July), Guru Purnima is the occasion on which disciples formally honour their own teachers, spiritual or academic, reflecting the broader Hindu conviction that the guru's role is considered equal or even superior to that of the gods themselves.

Observance spans nearly all of India and several other Dharmic traditions, with the specific figure honoured, one's own personal guru, Vyasa, or the Buddha, varying by community and lineage even as the same day and underlying principle is shared.