Śatapatha Brāhmaṇa ("of a hundred paths") 14.2.1.1

14.2.1.1

athāto rohiṇau juhoti ahaḥ ketunā juṣatāṃ sujyotirjyotiṣā svāhetyubhāvetena yajuṣā prātā rātriḥ ketunā juṣatāṃ sujyotirjyotiṣā svāhetyubhāvetena yajuṣā sāyam

He now offers (the first of) the two Rauhina (cakes):--(Vâg. S. XXXVII, 21), 'May the day be pleased with its brightness, the well-lighted with its light, hail!' with this text both (cakes are offered) in the morning;--'May the night be pleased with its brightness, the well-lighted with its light, hail!' with this text both (cakes are offered) in the evening.