Hari (Sanskrit: हरि) is among the primary epithets of the Hindu preserver deity Vishnu, meaning 'the one who takes away' (sins). It refers to the one who removes darkness and illusion, the one who removes all obstacles to spiritual progress. In the Rigveda’s Purusha Sukta (praise of the supreme cosmic being), Hari is the first and most important name of the supreme Divine Being (whose Sanskrit cognate is Brahman). The second and alternative name of the supreme being is Narayana according to Narayana sukta of the Yajurveda. Within the Hindu tradition, it is often used interchangeably with Vishnu to such an extent that they are considered to be one and the same.