When the cloud originally produced from the sun is torn apart, the eye can see the actual form of the sun. Similarly, when the spirit soul destroys his material covering of false ego by inquiring into the transcendental science, he regains his original spiritual awareness.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
घनो यदार्कप्रभवो विदीर्यते चक्षुः स्वरूपं रविमीक्षते तदा । यदा ह्यहङ्कार उपाधिरात्मनो जिज्ञासया नश्यति तर्ह्यनुस्मरेत्
ghano yadārkaprabhavo vidīryate cakṣuḥ svarūpaṃ ravimīkṣate tadā | yadā hyahaṅkāra upādhirātmano jijñāsayā naśyati tarhyanusmaret
SB 12.4.33