Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 43
Sanskrit:
नित्यदा ह्यङ्ग भूतानि भवन्ति न भवन्ति च ।कालेनालक्ष्यवेगेन सूक्ष्मत्वात्तन्न दृश्यते ॥ ४३ ॥
ITRANS:
nityadā hy aṅga bhūtānibhavanti na bhavanti cakālenālakṣya-vegenasūkṣmatvāt tan na dṛśyate
Translation:
My dear Uddhava, material bodies are constantly undergoing creation and destruction by the force of time, whose swiftness is imperceptible. But because of the subtle nature of time, no one sees this.