Also please explain the duration of time between creation and annihilation, and that of other subsidiary creations, as well as the nature of time, indicated by the sound of past, present and future. Also, please explain the duration and measurement of life of the different living beings known as the demigods, the human beings, etc., in different planets of the universe.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यावान् कल्पो विकल्पो वा यथा कालोऽनुमीयते । भूतभव्यभवच्छब्द आयुर्मानं च यत्सतः
yāvān kalpo vikalpo vā yathā kālo'numīyate | bhūtabhavyabhavacchabda āyurmānaṃ ca yatsataḥ
SB 2.8.12