Shiva Purana
त्वं न जानामि वै रुद्रं सर्वदेवेश्वरेश्वरम् ॥ ब्रह्मविष्णुमहेशानां जनक प्रकृतेः परम् ॥ २२ ॥
You do not know Rudra the lord of the chiefs of the gods, the progenitor of Brahmā, Viṣṇu and Śiva and who is greater than Prakṛti.
english translation
tvaM na jAnAmi vai rudraM sarvadevezvarezvaram ॥ brahmaviSNumahezAnAM janaka prakRteH param ॥ 22 ॥
hk transliteration by Sanscript