agny-arkacarya-go-vipra-

 guru-vrddha-surañ sucih

samahita upasita

 sandhye dve yata-vag japan

 

Translation: 

 

Purified and fixed in consciousness, the brahmacari should worship the fire-god, sun, acarya, cows, brahmanas, guru, elderly respectable persons and demigods. He should perform such worship at sunrise and sunset, without speaking but by silently chanting or murmuring the appropriate mantras.