Mahabharata 1.13.2

निखिलेन यथातत्त्वं सौते सर्वमशेषत: । आस्तीकक्ष द्विजश्रेष्ठ: किमर्थ जपतां वर:

nikhilena yathātattvaṃ saute sarvamaśeṣataḥ | āstīkakṣa dvijaśreṣṭhaḥ kimarthaṃ japatāṃ varaḥ ||

Śaunaka said: “O Sauti, tell us completely—exactly as it truly is, leaving nothing out—why Āstīka, the foremost among Brahmins, the best of those devoted to sacred recitation, came to be known and praised.”