The Ganga, the Sarasvati and the Sindhu, as well as the firmanent constituted the Dhara of that car; and the water (on the surface of the earth), as also all the other rivers became the Uparkaga of the car (the chains binding its several limbs).
गङ्गा सरस्वती सिन्धुधुरमाकाशमेव च। उपस्करो रथस्यासन्नाप: सर्वाश्च निम्नगाः॥