Shiva Purana
अजुनोपि च तं दृष्ट्वा मूकनामासुरं तदा ॥ स्मृत्वा शिवपदांभोजं विचारे तत्परोऽभवत् ॥ १३ ॥
Then Arjuna also saw the demon named Muka Remembering the lotus feet of Lord Śiva he became absorbed in his thoughts.
english translation
ajunopi ca taM dRSTvA mUkanAmAsuraM tadA ॥ smRtvA zivapadAMbhojaM vicAre tatparo'bhavat ॥ 13 ॥
hk transliteration by Sanscript