Chandogya Upanishad 2.14.2

2.14.2

sa ya evam etad bṛhad āditye protaṃ veda \
tejasvy: annādo bhavati \
sarvam āyur eti \
jyog jīvati \
mahān prajayā paśubhir bhavati \
mahān kīrtyā \
tapantaṃ na nindet \
tad vratam \\214.2\

2. He who knows thus this Bṛihad Sāman as woven upon the sun becomes a brilliant eater of food, reaches a full length of life, lives long, becomes great in offspring and in cattle, great in fame. One should not find fault with it when it is hot. That is his rule.