An important appelation of Viṣṇu (Vishnu) mentioned in Viṣṇusahasranāmastotra (Vishnusahasranamastotra; hymns praising the thousand names of Viṣṇu)

Mahābhārata (Kinjawadekar)(13.149.46)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(13.127.46)