Bhagavatapurana 10.3.24

10.3.24

/0 śrī-devaky uvāca
rūpaṃ yat tat prāhur avyaktam ādyaṃ $ brahma jyotir nirguṇaṃ nirvikāram &
rūpaṃ yat tat prāhur avyaktam ādyaṃ $ brahma jyotir nirguṇaṃ nirvikāram &
sattā-mātraṃ nirviśeṣaṃ nirīhaṃ % sa tvaṃ sākṣād viṣṇur adhyātma-dīpaḥ //

24. Devaki said:— Truly that Supreme Lord Vishnu who art Thou, gives light to the mental faculties, whose essence, the wise say, is unmanifest, who is the first Cause, Perfect Brahman, intelligence, and destitute of gunas and modifications, of all attributes and of all activity and who is of mere existence.