Shatapatha Brahmana 11.5.7.7

11.5.7.7

ghṛtena ha vā eṣa devāṃstarpayati ya evaṃ vidvāntsāmānyaharahaḥ svādhyāyamadhīte ta enaṃ tṛptā

And he who, knowing this, studies day by day the Sâman-texts for his lesson, satisfies the gods with ghee; and, being satisfied, they satisfy him by every object of desire, by every kind of enjoyment.