Agastya Marries Lopamudra and Begins Austerities
Agastya obtains Lopamudra as his wife and immediately commands her to discard her fine garments and ornaments. She obeys without hesitation, donning bark and skins, and together they go to Gangadvara to undertake severe austerities — she serving him with devotion, he growing affectionate toward her. After much time passes, Agastya sees her radiant after a bath and summons her for intercourse.
Agastya obtained Lopamudra as his wife and told her: throw away those expensive garments and ornaments.
She did.
The garments were beautiful to see, expensive and fine. Her thighs were like those of Rambha, the foremost of the apsaras (celestial dancers). But at his command, she discarded them. She donned bark and skins and rags. The long-eyed one became his equal in her vows.
Together they went to Gangadvara — the gateway of the Ganga, where the river descends from the mountains into the plains. There the illustrious one, supreme among rishis, undertook severe austerities with his wife beside him, devoted to his side. She served him with love and respect. The illustrious Agastya also exhibited great affection toward his wife.
Thus, a lot of time passed.
One day, the illustrious rishi saw Lopamudra after a bath. She was radiant in her austerities. He was pleased with her servitude, her purity, her self-control. He was pleased with her loveliness and her beauty. And he summoned her for intercourse. Aranyaka Parva, Chapter 392