active 11th century Somadeva Bhatta, The Kathá Sarit Ságara; or, Ocean of the Streams of Story
“ Then the king of Vatsa and Vásavadattá, in their despair, heard this voice coming from the air—“I, O king, am a female Vidyádhara named Máyávatí, and for this long time I have been a female elephant in consequence of a curse; and to-day, O lord of Vatsa, I have done you a good turn, and I will do another to your son that is to be: and this queen of yours Vásavadattá is not a mere mortal; she is a goddess for a certain cause incarnate on the earth.” Then the king regained his spirits, and sent on Vasantaka to the plateau of the Vindhya hills to announce his arrival to his ally Pulindaka ”
