Shiva Purana
तस्मान्महेश्वरश्चैव प्रकृतिः पुरुषस्तथा ॥ सदाशिवभवो विष्णुर्ब्रह्मा सर्वशिवात्मकम् ॥ १२ ॥
Hence he alone is Prakṛti, Puruṣa, Sadāśiva, Bhava, Viṣṇu and Brahmā. Everything is identical with Śiva.
english translation
tasmAnmahezvarazcaiva prakRtiH puruSastathA ॥ sadAzivabhavo viSNurbrahmA sarvazivAtmakam ॥ 12 ॥
hk transliteration by Sanscript