Skandapurana 16.11.43

16.11.43

tanme sthānaṃ mahādevi kailāsādapi vallabham ..
gocarmamātraṃ tatrāpi mahāgopyaṃ varānane .. 43 ..

That place of mine, O great goddess, is dearer [to me] even than Kailāsa; / even there, a space of only a cow's hide is most secret, O fair-faced woman!