Vishnupurana 3.2.p3

3.2.p3

Thereupon assuming the shape of a horse the sun begot upon Sanjnā three other children, the two Aswins and Revanta, and brought her back to his own house. To diminish his fervours Viswakarman placed him on his lathe and reduced some of his effulgence; to the eighth portion, for more than which was insperable. The portions of the divine Vaishnava effulgence that were in the sun being filed off by Viswakarman, fell down shining on the earth and the artist constructed of them the discus of Vishnu—the trident of Siva, the weapon of the god of wealth, the lance of Kartikeya, and the weapons of the other celestials: all these Viswakarman made from the additional rays of the sun.