Yogini in Tantric practice is the female who is an expert in yoga and gains a transcendental state in "Sadhana" thereby attaining the astral power that carries the energy of the Divine Goddess. The term "Yogini" can be found in several books related to Hinduism and Buddhism. Yogini possesses various faces from fiery to fierce and from devotional to modest.
According to the Markandeya Purana, the gods created goddesses from their Shaktis to associate Devi Durga who was engaged in fighting with Shumbha and Nishumbha. The Yoginis drank the blood of the demons to stop from falling on the ground and stop producing the multiplication of the demons. The principal Yoginis are identified with the Matrikas who are considered to possess inauspicious qualities. The Yoginis are thought to be born from the Matrikas. A group of nine Matrikas are considered to be the source of eighty one Yoginis. The Yoginis are categorized as Sahaja, Kulaja and Antyeja. Based on separate principles the Yoginis can be classified as Ksetraja, Pithaja, Yogaja and Mantraja.
Yogini in Tantric practice is regarded as an initiated female sexual partner who often takes part in Tantric rituals. A Yogini is considered to be a female personality who is endowed with supernatural powers and can also move to upward refinement of the seed force which is known as "urdhva retas" and attain "divya sharira" which means the attainment of the immortal body, succeeding over death. A Yogini is a woman who can maintain the preservation of her own genital ejaculation and control the male semen by practicing the "Vajroli- mudra" which is practiced by the yogis. In Tantra yoga, "Dakinis" perform as the model for a spirit of Yogini. Yogini in Tantric practice is described as a woman with exuberant passion, deep perception and spiritual power. Yogini can transform them into the desired form and are able to hypnotize a great yogi. Tantric practice does deal with the worship of the female deities like the Yoginis.
The Kundalini Shakti is represented by the Yoginis according to the Hindu perception. The Yogini is empowered with the ability to awaken the power of yoga in the mind and body of others. A great Yogini matches the power of Lord Shiva and is represented as the goddess. In Tantric practice the Yogini symbolizes pure energy. Bhairavi, the Goddess of fire, below in the Muladhara is the Yogini .The Yogini is the amalgamation of inner energy and ecstasy, the source of the Shakti and the idol of wisdom and energy.