Purusha sukta (IAST puruṣasūkta, Devanāgarī पुरुषसूक्तम्) is hymn 10.90 of the Rigveda, dedicated to the Purusha, the "Cosmic Being". Author Steven Rosen says, "The Bhagavata Purana and the Mahabharata boldly proclaim Vishnu as ultimate Purusha described in Purusha Sukta prayer". According to Indologist W. Norman Brown, "The verses of Purusha Sukta are definitely a reference to Vishnu, who, through his three steps, is all pervading (i.e. he spreads in all directions)". It is also found in the Shukla Yajurveda Samhita 30.1-16 and Atharva Veda Samhita 19.6.