Shiva Purana
वामदेवाह्वयो रूपश्चतुर्थः शङ्करस्य हि ॥ अहंकृतेरधिष्ठानो बहुकार्यकरः सदा ॥ ४३ ॥
The fourth form of Śiva is Vāmadeva who presides over the ego and is engaged in many incessant activities.
english translation
vAmadevAhvayo rUpazcaturthaH zaGkarasya hi ॥ ahaMkRteradhiSThAno bahukAryakaraH sadA ॥ 43 ॥
hk transliteration by Sanscript