Padma-purana Patalakhanda, chapter 82, verses 55 - 89

(The context is Lord Shiva responding to questions from Narada Muni. Lord Shiva is describing how after meditiating on Lord Narayana, Lord Narayana and Lakshmi devi appeared to him and asked him to choose a boon.)

"Having saluted the Lord of Kamala, the giver of boons, I said to Him, "O ocean of compassion, O highest God, I desire to see that form of yours which gives great joy, which is the abode of joy, which is eternal, which is embodied, which is superior to everything else, which is qualityless, actionless, calm and which the wise know as Brahman."

Then then glorious Lord of Kamala said to me, who has sought His refuge, "Today you will see that form of mine which is desired by you in your mind. Go to My Vrindavan, to the western bank of the Yamuna." Saying so, the Lord of the world vanished along with His beloved. Then I came to the auspicious bank of the Yamuna. There I saw Krishna, the Lord of all gods, who had put on the dress of a cowherd, who was lovely, who was the age of a boy, who had put his charming left hand on the shoulder of His beloved, who was laughing and making her laugh in the group of cowherdesses, who was bright like a glossy cloud, and who is the abode of auspicious qualities.

Then, having laughed, Krishna speaking sweetly like nectar said to me, "O Rudra, having known your desire I have appeared before you and you have now seen this uncommon form of Mine which is the embodiement of pure love that is solidified goodness intelligence joy [sat-cid-ananda], which is at the same time formless, qualityless, all-pervading, actionless and higher then the highest. The Upanisads describe this faultess form of Mine only. Because My qualities have not sprung from the constituents of prakrti and are endless, and because My qualities are not effected [unchanging], they call me the qualityless Lord. O Maheshvara, because this form of Mine is not visible to the physical eyes, all the Vedas describe Me as formless. The wise ones also know Me to be Brahman, part of the Supreme Spirit, because of My all-pervading nature. As I am not the agent of the visible world, they also call me actionless. I am also called actionless because My portions, through the power of maya, perform creation; I do not myself perform creation.

O Shiva, O Mahadeva, I am overcome with love for these cowherdesses. I do not know any act, even myself. Being influenced by her [Srimati Radharani] love, I always sport with Her. Know this My beloved Radhika to be a great Deity. Around Her see her friends in the hundreds and thousands. O Rudra, they are eternal, just as I have an eternal body. The cowherds, cowherdesses and Vrindavan always exists. All this is eternal and full of joy. Know this Anandakanda to be My Vrindavan, merely by entering which a man would not again go to worldly existence. The fool who, having reached My grove, goes elsewhere, is a self-killer. I have told the truth and only the truth. I never leave Vrindavan to go anywhere else. With Her I always live here only. O Rudra, I have thus told you everything I had in mind."