Shiva Purana

siva.sh/siva-purana/saturda-samhita/1/39

ईशानः पुरुषो घोरो वामसंज्ञस्तथैव च ।। ब्रह्मसंज्ञो महेशस्य मूर्तयः पंच विश्रुताः ।।३९।।

sanskrit

The five famous forms of Maheśa are thus named Īśāna, Puruṣa, Aghora, Vāma and Brahman. (also see Appendix on the five faces of Śiva)

english translation

IzAnaH puruSo ghoro vAmasaMjJastathaiva ca || brahmasaMjJo mahezasya mUrtayaH paMca vizrutAH ||39||

hk transliteration by Sanscript