The Essence of the Tantra of the Ten Mahavidyas

...is called Sundari.

"That Kali is said to be of two types, divided into Shyama dark-complexioned and Rakta red-complexioned. The dark-formed goddess is called 'Kali', and the red-formed goddess is considered 'Shri Sundari'."

This goddess initiated the entire universe, and before her emergence, she alone existed. This beginningless and endless entity is also known by the names Kamankala the art of desire and Shringkala the art of erotic beauty. This is the root power responsible for the manifestation of the Trinity: Brahma, Vishnu, and Shiva. From her, all the Marudganas wind deities, Gandharvas celestial musicians, Apsaras celestial nymphs, and Kinnaras were created. Everything visible and invisible in all directions was created by her.

"This thus is the all-formed Maha-Tripura-Sundari. I, you, the gods, the entire creation, the visible and the invisible, all of it is Maha-Tripura-Sundari herself. What is true, what is the supreme Brahman element, is Lalita, that is, Maha-Tripura-Sundari."

In this way, Maha-Tripura-Sundari is established in all gross things. I, you, the gods, and the entire creation, both visible and invisible, are all Maha-Tripura-Sundari herself. Just as water is only water, but the water of the Ganges is called Ganges-water and the water of the Yamuna is called Yamuna-water, similarly, the zero-formed root nature Mula Prakriti original nature is called Bhuvaneshwari, Kali, and Sundari. Fundamentally, they are all one.