Shiva Purana

siva.sh/siva-purana/saturda-samhita/12/41

इदन्तु शरभाकारं परं रूपम्पिनाकिनः ।। प्रकाशनीयं भक्तेषु शंकरस्य चरेषु वै ।। ४१ ।।

sanskrit

This great form of Śiva in the form of Śarabha shall be made public only among the leading devotees of Śiva.

english translation

idantu zarabhAkAraM paraM rUpampinAkinaH || prakAzanIyaM bhakteSu zaMkarasya careSu vai || 41 ||

hk transliteration by Sanscript