Bhagavatapurana 3.15.15

3.15.15

yatra cādyaḥ pumān āste bhagavān śabda-gocaraḥ /
sattvaṃ viṣṭabhya virajaṃ svānāṃ no mṛḍayan vṛṣaḥ //

15. And there dwells the glorious First Person who is only in the range of words (who is to be known only by the Vedanta) who, having associated Himself with the Satva unmixed with Rajas; showers blessings on us, His devotees, whom He would make happy.