Skandapurana 1.3.30.83

1.3.30.83

anyeṣāṃ kā kathā dūtā ye'rcayaṃti sadāśivam..
bhaktyā paramayā śaṃbhuṃ rudrāste nātra saṃśayaḥ.. 32.83 ..

What need to speak of others, O messengers, who worship Sadāśiva,
Śambhu, with supreme devotion? They are Rudras, there is no doubt here.