My initiation and the science of shaktipat by Swami Shivom Tirth, a noted shaktipat guru, describes how he received shaktipat from another noted shaktipat guru, Swami Vishnu Tirth, in 1960.

One gets the support of the psychic power of the Guru only when the Guru, out of his own resolve, extends his psychic power. This is Shaktipat.”

My next query was, "But people will consider kriyas to be a bout of madness.”

Maharajshri answered, “People do call it madness, but this is due to their ignorance. Kriyas appear to be madness, but if you think about it, there is a big difference between the two. People can see the body, but not the psyche. The infinitesimal changes that take place in the psyche do not meet their eye. The world is based on sight, whereas spirituality is a subject of the invisible. The world attempts to understand everything by direct experience or proof. If it cannot understand something, it is labeled madness, whereas, in reality, this itself is its own foolishness.

“There is one similarity in the kriyas during sadhan [effort less spiritual practice] and madness. The basis for both are samskaras [accumulated impressions]. These impressions do not become thinned out through madness, whereas in sadhan they come to an end. In madness the intellect is agitated, whereas in sadhan it remains normal. In madness there is a possibility of something unfavorable happening, whereas in sadhan there is no such possibility. The acts of madness cannot be stopped until the bout of madness comes to an end. On the other hand, the movements occurring during sadhan can be stopped at will.”

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Swami Shivom Tirth (1924 ‒ 2008) was a noted guru of the Tirth lineage of Siddha Yoga. In his later years he gave up public life, left his ashram, and lived in an isolated place where he wrote many books.