SB 7.12.2
Devanāgarī
सायं प्रातरुपासीत गुर्वग्न्यर्कसुरोत्तमान् । सन्ध्ये उभे च यतवाग्जपन्ब्रह्म समाहित: ॥ २ ॥
Text
sāyaṁ prātar upāsīta gurv-agny-arka-surottamān sandhye ubhe ca yata-vāg japan brahma samāhitaḥ
Synonyms
sāyam—in the evening;prātaḥ—in the morning;upāsīta—he should worship;guru—the spiritual master;agni—the fire (by a fire sacrifice);arka—the sun;sura-uttamān—and Lord Viṣṇu, Puruṣottama, the best of personalities;sandhye—morning and evening;ubhe—both;ca—also;yata-vāk—without talking, being silent;japan—murmuring;brahma—the Gāyatrīmantra;samāhitaḥ—being fully absorbed.
Translation
At both junctions of day and night, namely, in the early morning and in the evening, he should be fully absorbed in thoughts of the spiritual master, fire, the sun-god and Lord Viṣṇu and by chanting the Gāyatrī mantra he should worship them.