Devi herself appears and tells Hayagreeva that as Agastya and his wife Lopamudra are great devotees of her
The famous Lalita Trishati stotra, which is a dialog between Lord Hayagreeva and Agastya in the brahmandapurana, holds one of the keys to the highly guarded Shodasakshari mantra of Devi, with which the coveted Shree Chakra is worshiped.
After Hayageeva gave the Lalita sahasranama stotra, Rishi Agastya falls on his feet and requests him to reveal to him the secret of Shree Chakra worship. Hayageeva keeps quite. At that time the Devi herself appears and tells Hayagreeva that as Agastya and his wife Lopamudra are great devotees of her and deserve the secrets of the Trishati stotra. Then Hayagreeva teaches the Lalita Trishati stotra to Agastya.