Shiva Purana
शिवादीशान उत्पन्नस्ततस्तत्पुरुषोद्भवः ॥ ततोऽघोरस्ततो वामस्सद्योजातोद्भवस्ततः ॥ ५८ ॥
From Śiva is born Īśāna; from Īśāna the Puruṣa, from Puruṣa Aghora, from him Vāmadeva and from him Sadyojāta.
english translation
zivAdIzAna utpannastatastatpuruSodbhavaH ॥ tato'ghorastato vAmassadyojAtodbhavastataH ॥ 58 ॥
hk transliteration by Sanscript