Guru yoga (Tibetan bla ma’i rnal ’byor; Sanskrit guru-yoga) means "union with the guru." It is the devotional core of Vajrayana Buddhism and, within the Nyingma school, the single most emphasized practice. Rather than worshipping a distant figure, the practitioner merges his or her own mind with the awakened mind of the lineage teacher, recognizing that the guru is the living embodiment of all buddhas.

The point is not blind submission but receiving blessings (jinlab). Tibetan teachers repeatedly stress that realization cannot be manufactured by intellect alone; it is awakened through the transmission of blessing from a realized holder of the lineage. Guru yoga is the method that opens that channel.

In the Nyingma ngöndro (sngon ’gro, the preliminary practices), guru yoga is the fifth and culminating preliminary, following refuge and prostration, Vajrasattva purification, and mandala offering. While the first four accumulate merit and purify obscurations, guru yoga gathers it all into the single act of receiving the guru’s wisdom-mind.

Crucially, guru yoga is never separate from the Dzogchen view. The great Nyingma masters teach that the guru is none other than the display of one’s own rigpa. Thus the practice both prepares the student and, at its peak, reveals the ground of awakening directly — guru yoga and the Great Perfection are two faces of one path.

A standard session begins with the seven-branch practice (taking refuge, offering, confession, rejoicing, requesting teaching, requesting the guru remain, and dedication) and the offering of the mandala. The practitioner then visualizes the root guru above the crown of the head — most often in the form of Guru Rinpoche (Padmasambhava), or as the "three roots" of guru, deity, and dakini together.

From the guru’s heart a stream of light and nectar descends, purifying karma and filling the practitioner with blessing. One recites the guru’s mantra — "Om Ah Hum Vajra Guru Padma Siddhi Hum" — and rests in the inseparable union of one’s own mind and the guru’s wisdom. The session closes by dissolving the visualization and dedicating the merit.

Offerings are the language of devotion in guru yoga, and among them the lamp offering — light offered as butter lamps or lamps of clear butter — holds a special place. In the offering section of the practice, the practitioner visualizes presenting countless lamps of light to the guru and to the entire assembly of buddhas and lineage holders, symbolizing the dispelling of ignorance and the illumination of wisdom.

For Nyingma communities this is not merely symbolic. Lamp offerings are made daily before the guru’s image and on shrine tables, and during guru yoga retreats hundreds of lamps may be lit. The light offering thus becomes a living, repeated act that trains the mind to offer its own obscurations and to recognize the guru’s clarifying presence — a direct, embodied expression of the "lamp offering" so often sought by those newly discovering Himalayan practice.

The Nyingma masters call guru yoga the swift path (myur lam) because it relies on blessing rather than only on one’s own gradual effort. Patrul Rinpoche, in The Words of My Perfect Teacher, warns that without guru yoga the preliminaries lack their life; Dilgo Khyentse Rinpoche describes the guru’s blessing as the sun whose rays melt the snow of doubt in the practitioner’s heart.

In practice this means progress depends less on isolated study and more on a living relationship of trust with the lineage. For international readers approaching Nyingma, understanding guru yoga is the key that unlocks every other practice: the ngöndro, the sadhanas, and ultimately the Dzogchen pointing-out instruction all flow from it.