Shiva Purana
शिवयोर्दयिता पुत्रौ देवौ हेरंबषण्मुखौ ॥ शिवानुभावौ सर्वज्ञौ शिवज्ञानामृताशिनौ ॥ २३ ॥
The two sons of Lord Śiva were very dear to him. They were omniscient and devoured the nectar of knowledge of Lord Śiva.
english translation
zivayordayitA putrau devau heraMbaSaNmukhau ॥ zivAnubhAvau sarvajJau zivajJAnAmRtAzinau ॥ 23 ॥
hk transliteration by Sanscript