Shiva Purana
निवृत्त्या रुद्रपर्यन्तं स्थितिरण्डस्य शोध्यते ॥ प्रतिष्ठया तदूर्ध्वं तु यावदव्यक्तगोचरम् ॥ २२ ॥
The situation of the cosmic egg upto Rudra is purified by Nivṛtti. Above that upto the sphere of Avyakta It is purified by Pratiṣṭhā.
english translation
nivRttyA rudraparyantaM sthitiraNDasya zodhyate ॥ pratiSThayA tadUrdhvaM tu yAvadavyaktagocaram ॥ 22 ॥
hk transliteration by Sanscript