Mbh 1.1.7

In this world, when it was destitute of brightness and light, and enveloped all around in total darkness, there came into being, as the primal cause of creation, a mighty egg, the one inexhaustible seed of all created beings. It is called Mahadivya, and was formed at the beginning of the Yuga, in which we are told, was the true light Brahma, the eternal one, the wonderful and inconceivable being present alike in all places; the invisible and subtile cause, whose nature partaketh of entity and non-entity. From this egg came out the lord Pitamaha Brahma, the one only Prajapati; with Suraguru and Sthanu. Then appeared the twenty-one Prajapatis, viz., Manu, Vasishtha and Parameshthi; ten Prachetas, Daksha, and the seven sons of Daksha. Then appeared the man of inconceivable nature whom all the Rishis know and so the Viswe-devas, the Adityas, the Vasus, and the twin Aswins; the Yakshas, the Sadhyas, the Pisachas, the Guhyakas, and the Pitris. After these were produced the wise and most holy Brahmarshis, and the numerous Rajarshis distinguished by every noble quality. So the water, the heavens, the earth, the air, the sky, the points of the heavens, the years, the seasons, the months, the fortnights, called Pakshas, with day and night in due succession. And thus were produced all things which are known to mankind.