Shiva Purana

siva.sh/siva-purana/saturda-samhita/14/29

अथवा किमिदं चित्रं शर्वभक्तजनेष्वहो।। स्वयमाविरभूद्रुद्रो ययो रुद्रस्तदर्चितः ।। २९।।

sanskrit

Or what is this wonderful thing among the devotees of Lord Śiva Rudra himself appeared and was worshiped by him.

english translation

athavA kimidaM citraM zarvabhaktajaneSvaho|| svayamAvirabhUdrudro yayo rudrastadarcitaH || 29||

hk transliteration by Sanscript