Mahendranath Gupta (Bengali: ??????????? ?????) (14 July 1854 – 4 June 1932), (also famously known as ?????, Master Mahashay, and M.), was a disciple of Ramakrishna (a great 19th-century Hindu mystic) and a great mystic himself.
He was the author of Sri Sri Ramakrishna Kathamrita (5 vols.), a Bengali classic; in English, it is known as The Gospel of Sri Ramakrishna.
He was also an early teacher to Paramahansa Yogananda, a famous 20th-century yogi, guru and philosopher.
In his autobiography, Yogananda noted that Gupta ran a small boys' high school in Kolkata and he recounted their visits, as they often traveled to the Dakshineshwar Kali Temple together.
Having a devotional nature, Gupta worshipped the Divine Mother in the form of Kali, and often reflected the wisdom of his guru Ramakrishna in his daily life and mannerisms.
Yogananda reverentially regarded Gupta's spirituality, calling him an "Incarnation of purity" and "the greatest man of humility I ever knew."
Author: Jonoikobangali Source: From the book Sri Sri Ramakrishna Kathamrita (Bengali), by Sri Ma (Mahendranath Gupta) , Udbodhan Karjalay, Kolkata, First Published on 1939 ISBN 81-8040-042-5. License: PD India