Skandapurana 7.20.37

7.20.37

sabhāryasya saudāsasya vanapraveśaḥ . tatra rakṣobhāvamāpannena tena vasiṣṭhasya paśyataḥ sabhrātṛśatasya śakterbhakṣaṇam . putraśokānunaptasya vasiṣṭhapyātmahatyārthaṃ prayatnaḥ . (śatadru) vipāśādi - nāma - niruktiḥ . vasiṣṭhena rājño rakṣobhāvāt mocanam . rājñaḥkṣetre putrotpādanam . adṛśyantyā garbhataḥ parāśarasyotpattiḥ . parāśarakṛto rakṣaḥ- satrasamārambhaḥ .

The entry into the forest by Saudāsa together with his wife. There, having assumed the state of a demon, he devours Śakti along with his hundred brothers before the eyes of Vasiṣṭha. The attempt at suicide by Vasiṣṭha, tormented by grief for his sons. The etymological derivation of the names Śatadru, Vipāś, and others. The liberation of the king from the state of a demon by Vasiṣṭha. The procreation of a son upon the king's field [his wife]. The birth of Parāśara from the womb of Adṛśyantī. The commencement of the demon-sacrifice performed by Parāśara.