Shiva Purana

siva.sh/siva-purana/saturda-samhita/8/42

ब्रह्मोवाच ।। नीललोहित जाने त्वां मा भैषीश्चन्द्रशेखर ।। भालस्थलान्मम पुरा रुद्रः प्रादुरभूद्भवान् ।। ४२ ।।

sanskrit

Brahma said. I know you are blue and red, don't be afraid, Chandrashekhar. In the past you appeared as Rudra from the place of my forehead.

english translation

brahmovAca || nIlalohita jAne tvAM mA bhaiSIzcandrazekhara || bhAlasthalAnmama purA rudraH prAdurabhUdbhavAn || 42 ||

hk transliteration by Sanscript