Agnipurana 84.22

84.22

vṛṣo vṛṣadharo vīryo grasanaḥ(2) sarvatomukhaḥ /
lohitaś caiva vijñeyā daśa rudrāḥ phaṇisthitāḥ //

Vṛṣa, Vṛṣadhara, Vīrya, Grasana, Sarvatomukha, / and Lohita—these are to be known as the ten Rudras residing on the serpent;