In the Ramayana, what was the tapasya Viswamitra performed to become a brahmarishi?

Question

In the Ramayana, Viswamitra had once been a kshatriya king (warrior of nobility) who performed an unequaled tapasya (religious ritual) to become a brahmarishi (a sage of Brahman).

Describe the tapasya he performed.

Answer 1

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