Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 20
Sanskrit:
तमस्यपारे विदुरात्मसर्गंविचिन्वतोऽभूत्सुमहांस्त्रिणेमि: ।यो देहभाजां भयमीरयाण:परिक्षिणोत्यायुरजस्य हेति: ॥ २० ॥
ITRANS:
tamasy apāre vidurātma-sargaṁvicinvato ’bhūt sumahāṁs tri-ṇemiḥyo deha-bhājāṁ bhayam īrayāṇaḥparikṣiṇoty āyur ajasya hetiḥ
Translation:
O Vidura, while searching in that way about his existence, Brahmā reached his ultimate time, which is the eternal wheel in the hand of Viṣṇu and which generates fear in the mind of the living entity like the fear of death.