This Surya mantra is found in the Rig Veda. This is in praise of Surya, the Sun God in Hindu mythology. Surya Dev, also known as Suraya or Suraj Devata, is the main solar deity in Hinduism. He is also commonly referred to as the Sun god.
Aa krishnen rajasa vartamaano niveshyannamritam matrayam
Hiranyayena savita rathena devo yati bhuvnaani
Meaning of the Surya Mantra:
Throughout the dusky
laying to rest the
immortal and the
Borne in his golden chariot he cometh, Savitar, God who looks on every creature.