O Brahmana, what you have enquired of me is the result of self-discipline. This selfdiscipline can only be acquired by subduing the senses. It can not be acquired by any other means.
तपोमूलमिदं सर्वं यन्मां विप्रानुपृच्छसि। इन्द्रियाण्येव संयम्य तपो भवति नान्यथा॥