He was the greatest of all the disciples of Asuri and was called the undying. He had performed a mental Sacrifice lasting for a thousand years.
आसुरेः प्रथमं शिष्यं यमाहुश्चिरजीविनम्। पञ्चस्रोतसि यः सत्रमास्ते वर्षसहस्रिकम्॥