In over 220 verses, Hari Bhakti Vilasa describes the details of Purashcaran
Eclipse and Mantra Siddhi
Vrindavan, 2020-06-22 (Mahanidhi Madan Gopal Das): To attain siddhi or perfection in chanting of the diksha mantras i.e. Gopal mantra, Sri Sanatana Goswami says the one must observe the purashcaran process which he and Sri Rupa did before meeting Sri Chaitanya. (Bhakti-ratnakara I.647)
In over 220 verses, Hari Bhakti Vilasa describes the details of purashcaran
“The purashcaran process is as follows:
‘In the morning, afternoon and evening of each day of purashcaran, one must do murti-puja, murmur the Gopal diksha mantra, offer tarpana, oblations to ancestors, perform homa (fire sacrifice), feed Brahmins.
‘To do purashcaran vrata, one must do these five activities daily for as many days (20, 30, 45) it takes to chant one’s diksha mantra 18,000 times or whatever number one vows to chant (sankalpa). To attain siddhi in the Gopal diksha mantra received from Sri Guru, one must observe the purashcaran process.’” (Hari Bhakti Vilasa 17.11–12)
Hari-bhakti-vilasa (17.4–5, 7) says:
vina -yena-na–siddhah -syan-mantro-varsha-shatair-api
“Without doing purashcaran, one cannot attain mantra siddhi even by chanting the diksha mantra for hundreds of years. But one who does purashcaran can very easily attain mantra siddhi.”
At the end of the description of the purashcaran process, Sri Sanatana Goswami describes a samkshipta-purashcaran, a brief or “short cut” form of it.
“During a solar or lunar eclipse, one should fast, remain in a pure state of mind, and chant the Gopal diksha mantra from the beginning of the eclipse until the end (sparsha time to moksha time), while standing in the water of a river that flows into the sea up to his waist.” (Hari Bhakti Vilasa 17.235-236)
Regarding this point, Pandit Sri Krishna Das Babaji said that according to Hari Bhakti Vilasa (17.17-21), one may chant in other places also: “Purashcaran may be done by the side of a river, underneath a bilva or banyan tree, within water, in a holy place, before murti of Sri Krishna [best place], on the seashore, or any place where you can easily concentrate your mind.”
Before observing a purashcaran vrata one should receive blessings from Sri Guru. After bathing, dress in clean cloth (dhoti & chadar or sari), sit on a pure asana, and chant the Gopal mantra without stopping or getting up for the entire eclipse period.
After doing purashcaran, one must bathe, change clothes, worship Sri Guru and take maha-prasad after full Thakurji puja.
Jai Jai Sri Radhe! Mantra siddhi ki jai!