"Two hermits, Mandar and Udar, refuse to share with the earth any part of their cow’s milk. Angered, she [Earth] despatches her son Maninaga to poison the milk. A female frog resident in their ashram notices this and jumps into the vessel of milk to save the sages. By their curse, she turns into a kanya [girl] whom they name Vengavati and affiance to Vali. He, however, has sexual intercourse with her before marriage and she becomes pregnant. Ravana asks the hermits for her hand. When they refuse, he assumes Vali’s form (like Indra with Ahalya) and spirits her away. Pulled in opposite directions by Ravana and Vali, she splits into two, giving birth to Angad Yama and Vayu revive her. Thus, she is a double of Tara. Being obtained through ill means, she was named Mandodari; or perhaps she was named after the two sages who turned her from a frog into a woman."