Tantric empowerment / initiation

An empowerment (Sanskrit abhiṣeka, literally a "sprinkling" or "anointing") is a ritual ceremony in the Vajrayāna traditions of Buddhism — the branch found mainly in Tibet and the Himalayas that works with tantra, an advanced and often secret set of meditation practices. Buddhism in general is the path taught by the Buddha ("the awakened one") for ending the dissatisfaction woven through ordinary life. The Vajrayāna holds that some of its most powerful techniques cannot simply be read from a book; a person must first be ritually authorized to use them.

That authorization is the empowerment. A qualified teacher (a guru or lama) leads the student through a ceremony that "ripens" the student's mind and formally permits them to take up a specific practice — usually one centered on a particular awakened figure, or "deity," which in Buddhism is understood as a symbol of enlightened qualities rather than an external god to be worshipped. The ceremony often involves vases of water, sacred sounds, hand gestures, and visualization, each step pointing to a quality the student is being introduced to.

Think of it less like a graduation diploma and more like being handed the key and the instructions to a locked room, along with a promise to use them responsibly. Receiving an empowerment commits the student to certain vows (samaya) and to a relationship of trust with the teacher. Without it, the later tantric practices are considered not just ineffective but inappropriate to attempt. The emphasis on initiation and lineage is distinctive to the tantric stream; it is not a feature of the earliest Buddhism, where teachings were openly given to anyone who would listen.