KāṭhGS, 8, 2.0 vasavo vratapatayo rudrā vratapataya ādityā vratapatayo marudaṅgiraso vratapataya iti vratam ālabhya vasūn adbhis tarpayet prathamasmiṃs trirātre rudrān dvitīya ādityāṃs tṛtīye marudaṅgirasaś caturthe //