Chandogya Upanishad 2.67

ब्रह्मवादिनो वदन्ति यद्वसूनां प्रातः सवनꣳरुद्राणां माध्यन्दिनꣳसवनमादित्यानां च विश्वेषां च देवानां तृतीयसवनम् ॥ १ ॥

2.24.1 — brahmavadino vadanti yadvasunam pratah savanamrudranam madhyandinamsavanamadityanam cha vishvesham cha devanam tritiyasavanam || 1 ||

The teachers of Brahman (Veda) declare, as the Prâtah-savana (morning-oblation) belongs to the Vasus, the Mâdhyandina-savana (noon-libation) to ​the Rudras, the third Savana (evening-libation) to the Âdityas and the Visve Devas,

ब्रह्मवादी कहते हैं — 'यदि प्रातःसवन वसुओं का है, माध्यन्दिन-सवन रुद्रों का है, और तृतीय-सवन आदित्यों एवं विश्वेदेवों का है —