Śrīmad-Bhāgavatam · Text 2.8.12
Who is speaking and story frame
यावान् कल्पोविकल्पो वा यथा कालोऽनुमीयते ।
भूतभव्यभवच्छब्द आयुर्मानं च यत् सत: ॥ १२ ॥
yāvān kalpo vikalpo vā
yathā kālo ’numīyate
bhūta-bhavya-bhavac-chabda
āyur-mānaṁ ca yat sataḥ
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.
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