Caitanya-caritāmṛta 20.112
viṣṇu-śaktiḥ parā proktā kṣetrajñākhyā tathā parā avidyā-karma-saṁjñānyā tṛtīyā śaktir iṣyate
[vishnu-shaktih paraa proktaa kshetrajnaakhyaa tathaa paraa avidyaa-karma-samjnaanyaa triteeyaa shaktir ishyate]
Blended reading (Sanskrit + English inline)
viṣṇu-śaktiḥ parā proktā kṣetrajñākhyā tathā parā avidyā-karma-saṁjñānyā tṛtīyā śaktir iṣyate
“ ‘Originally, Kṛṣṇa’s energy is spiritual, and the energy known as the living entity is also spiritual. However, there is another energy, called illusion, which consists of fruitive activity. That is the Lord’s third potency.’
Purport
This is a quotation from the Viṣṇu Purāṇa (6.7.61). For a further explanation of this verse, refer to Ādi-līlā, chapter seven, verse 119.
— A.C. Bhaktivedanta Swami Prabhupāda
My note
Source: vedabase.io