Matsyapurana 15.24

15.24

ekāṣṭakābhavat paścād brahmaloke gatā satī
traya ete gaṇāḥ proktāś caturthaṃ tu vadāmyataḥ //

"There are other regions known as Kâmadughas, where reside the pious Pitṛis, called Susvada as well as Âjyapâ in the region of Prajâpati Kardarma. They are the sons of Pulaha and are worshipped by the Vaiśyas. The worshippers of these Pitṛis, by performing śrâddha, go to the same region where they see the manes of their deceased ancestors, mother, father, sister, friends, relations, etc." Virajâ was the mânasa daughter of Âjyapâ Pitṛis and was the queen of King Nahuṣa and the mother of Yayâti. She was afterwards known as Ekaṣṭakâ in Brahmaloka.—20-24.

Something has been said about the three groups of pitṛis who are worshipped by men and have forms, now follows the description of the fourth set of Pitṛis.—25. There is a mânasa region in the upper Brahmâṇḍa which is the abode of Sômapa Pitṛis. They are eternal, the very incarnation of Dharma, and are as venerable as Brahmâ. They are born of Swadhâ, and having attained Brahmahood, by their power of yoga, they carried on the work of past creations and now rest in Mânasa regions. Narmadâ, which flows in the southern part, is the mânasa daughter of the Sômapa Pitṛis that purifies the people by her sacred waters.—26-28.