In the Vedic hymns, Vishnu is invoked alongside other deities, especially Indra, whom he helps in killing the symbol of evil named Vritra. His distinguishing characteristic in Vedas is his association with light. Two Rigvedic hymns in Mandala 7 refer to Vishnu. In section 7.99 of the Ragveda, Vishnu is addressed as the god who separates heaven and earth, a characteristic he shares with Indra. In the Vedic texts, the deity or god referred to as Vishnu is Surya or Savitr (Sun god), who also bears the name Suryanarayana. Again, this link to Surya is a characteristic Vishnu shares with fellow Vedic deities named Mitra and Agni, wherein different hymns, they too bring men together and cause all living beings to rise up and impel them to go about their daily activities.