Mahabharata 12.322.26

12.322.26

ye hi te munayaḥ khyātāḥ sapta citraśikhaṇḍinaḥ |
tairekamatibhirbhūtvā yatproktaṃ śāstramuttamam || 26 ||

His kingdom and wealth and spouses and animals were all regarded by him as obtained from Narayana. He, therefore, offered all his possessions to that great deity. Adopting the Sattwata ritual, king Uparichara, with concentrated soul, used to discharge all his sacrificial acts and observances, both optional and obligatory. In the place of that illustrious king, many foremost Brahmanas, well conversant with the Pancharatra ritual, used to eat before all others the food offered to the god Narayana. As long as that slayer of foes continued to rule his kingdom righteously, no untruth ever escaped his lips and no evil thought ever entered his mind. With his limbs he never committed even the slightest sin. The seven celebrated Rishis, viz., Marichi, Atri, Angiras, Pulastya, Pulaha, Kratu, and Vasishta of great energy, who came to be known by the name of Chitra-sikhandins, uniting together on the breast of that foremost of mountains, viz., Meru, promulgated an excellent treatise on duties and observances that was consistent with the four Vedas. The contents of that treatise were uttered by seven mouths, and constituted the best compendium of human duties and observances. Known, as already stated, by the name of Chitra-sikhandins, those seven [paragraph continues] Rishis constitute the seven (Pravriti) elements (of Mahat, Ahankara, etc.) and the Selfborn Manu, who is the eighth in the enumeration, constituted original Prakriti.