The Religion and Philosophy of the Veda and Upanishads v1.c20.s2.17

v1.c20.s2.17

Tvaṣṭṛ figures also in the myth of the Ṛbhus making his cup into four; even if the cup be the moon, as is possible, it does not shed any light either on the original nature of Tvaṣṭṛ or on his connexion with the moon.