Skandapurana 1.3.2.43

1.3.2.43

yathā śivastathā tvaṃ hi yathā tvaṃ ca tathā śivaḥ..
sevakāśca vayaṃ sarve tava vā śaṃkarasya ca.. 4.43 ..

“Just as Śiva is, so indeed are you; and just as you are, so is Śiva. / We are all the servants of you or of Śaṃkara.”