Gārgī Vācaknavī questioned him twice in that assembly. The first time she asked him on what the waters are woven, warp and woof, and he answered her step by step, the wind, the middle air, and then the worlds of the gandharvas, of the sun, the moon and the stars, of the gods, of Indra, king of the gods, of Prajāpati, the lord of creatures, and of further worlds beyond them, until she asked on what those are woven, and he told her not to ask too far, or her head would fall off, and she fell silent.
The second time she asked the brahmins' leave to put two questions to him, and rose against him like a warrior with two arrows, and asked him on what all that is past, present and to come is woven, and on what that in turn is woven. He told her of the imperishable, at whose command the sun and moon, heaven and earth, the days and seasons and years are held apart, each in its place. And when he had answered, Gārgī told the brahmins to count themselves fortunate if they could bow to him and get away, for not one of them would ever defeat him in speaking of Brahman.