MUṆḌAKA UPANISHAD · 1.2.5

एतेषु यश्चरते भ्राजमानेषु यथाकालं
चाहुतयो ह्याददायन् ।
तं नयन्त्येताः सूर्यस्य रश्मयो यत्र
देवानां पतिरेकोऽधिवासः ॥ ५॥

eteṣu yaścarate bhrājamāneṣu yathākālaṃ
cāhutayo hyādadāyan ।
taṃ nayantyetāḥ sūryasya raśmayo yatra
devānāṃ patireko’dhivāsaḥ ॥ 5॥

He who in these when they are blazing bright performs the rites, in their due season, him his fires of sacrifice take and they lead him, these rays of the Sun, there where the Overlord of the gods is the Inhabitant on high.