Sri Yukteswar Giri’s emergence as a guru can be understood as the natural flowering of his discipleship under Lahiri Mahasaya and his own spiritual realization. Born Priya Nath Karar, he came under the guidance of Lahiri Mahasaya, who initiated him into Kriya Yoga and oversaw his training. Through rigorous practice, austerity, and a life oriented toward truth, he attained a high degree of spiritual realization and mastery of yogic disciplines. Within this traditional framework, such realization did not remain a private attainment but gradually took on a guiding function for others.

A crucial element in this transition was the recognition and authorization of his own guru. In the Kriya Yoga lineage, it is customary that only those whom the guru deems ready are encouraged to teach and initiate others. Lahiri Mahasaya, seeing Sri Yukteswar’s maturity in Kriya Yoga and his capacity to guide, authorized him to instruct worthy seekers and initiate them into the practice. This endorsement did not merely confer a title; it affirmed that he could serve as a channel for the same liberating current that he had received.

Accounts from the tradition further describe a wider spiritual commission that shaped his role. It is said that Mahavatar Babaji requested Sri Yukteswar to train a disciple who would later carry Kriya Yoga to the West, and to write a treatise, *The Holy Science*, demonstrating the unity underlying Eastern and Western scriptures. This portrayal situates his guruship not only within a personal lineage but within a broader spiritual mission, in which his scholarship and realization were to serve a larger unfolding of Kriya Yoga in the modern world.

Sri Yukteswar’s life as a guru then took concrete form in his ashrams at Serampore and Puri, where he lived as a renunciate and accepted disciples for training. There he combined strict discipline with deep scriptural insight, guiding students in Kriya Yoga and in the study of texts such as the Bhagavad Gita and the Bible. Disciples, including Paramahansa Yogananda, recognized in him a realized master capable of transmitting both practical methods and transforming insight. In this way, his status as guru did not arise from formal designation alone, but from the convergence of lineage authorization, inner realization, and the living relationship with those who sought him as their spiritual guide.