Shiva Purana
शिवोपि च तथाभूतञ्ज्ञात्वा पाण्डवमर्जुनम् ॥ निजभक्तवरं स्वामी महातुष्टो बभूव ह ॥ ५४ ॥
Seeing Arjuna, son of Pāṇḍu, the foremost of his devotees, lord Śiva was extremely glad and satisfied.
english translation
zivopi ca tathAbhUtaJjJAtvA pANDavamarjunam ॥ nijabhaktavaraM svAmI mahAtuSTo babhUva ha ॥ 54 ॥
hk transliteration by Sanscript