Regarding it is cited this old, history. Having heard it, you should act according to it, O foremost of all twice-born persons.
पितर ऊचुः अत्राप्युदाहरन्तीममितिहासं पुरातनम्। श्रुत्वा च तत् तथा कार्यं भवता द्विजसत्तम॥