SB 11.3.8
dhatupaplava asanne
vyaktam dravya-gunatmakam
anadi-nidhanah kalo
hy avyaktayapakarsati
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
When the annihilation of the material elements is imminent, the Supreme Personality of Godhead in His form of eternal time withdraws the manifest cosmos, consisting of gross and subtle features, and the entire universe vanishes into nonmanifestation.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
In the Third Canto of Srimad-Bhagavatam Lord Kapiladeva teaches that the material nature originally exists in an inert state of equilibrium called pradhana. When Lord Visnu casts His potent glance in the form of kala, or time, material interactions take place, culminating in the variegated creation of the material cosmos. In this verse it is stated that at the end of universal time the same kala that originally incited the female nature into manifestation again withdraws the cosmos into its original state of inert nonmanifestation. According to Srila Bhaktisiddhanta Sarasvati Thakura, the time potency itself, kala, is then withdrawn, and it merges into the Supreme Soul, who manifests Himself as the original cause of material nature (anadir adir govindah sarva-karana-karanam).
Such technical arrangements for creation and annihilation, birth and death, do not exist in the eternal spiritual kingdom of God. In the spiritual sky the variegated spiritual enjoyment of the Lord and His devotees is not hampered by the inferior cycles of birth, maintenance and destruction found in the material world.