The Law Code of Yājñavalkya 3.5.78

3.5.78

avīcim andhatāmisraṃ kumbhīpākaṃ tathaiva ca |
asipatravanaṃ caiva tāpanaṃ caikaviṃśakam ||

Avīci, Andhatāmisra, and Kumbhīpāka likewise, / Asipatravana, and Tāpana as the twenty-first;