The Puranic Atri is defined largely by his wife. Anasuya, whose name means without envy, is held up as the model of a certain kind of power: fidelity so complete that it becomes a force other beings must reckon with.
The story most often told about her turns on that. The three great gods, prompted in most versions by their own wives, come to the hermitage as brahmin guests and make an impossible demand: they will accept food only if she serves it naked. Refusing a guest is a serious fault and complying is unthinkable. She sprinkles water on them, turns all three into infants, and feeds them as a mother, which satisfies the letter of the request and empties it of meaning. When the goddesses come to ask for their husbands back, the three are restored, and portions of them are born to her as sons: Soma, who is the moon, Dattatreya, in whom all three are combined, and Durvasa, who carries the destructive temper.
Dattatreya is the consequential one. He became the centre of a devotional tradition of his own, strong in Maharashtra and Karnataka, understood as a teacher figure combining the three gods, and holding an unusual position between Vaishnava and Shaiva devotion.
The Ramayana brings the couple back into the narrative during the exile. Rama, Sita and Lakshmana come to Atri's hermitage, and Anasuya receives Sita separately and instructs her on the conduct of a wife, giving her ointments and clothing that will not soil. The scene is one of very few in the epic where a woman teaches a woman without a man present.