Bhagavatapurana 2.10.47

2.10.47

parimāṇaṃ ca kālasya kalpalakṣaṇavigraham /
yathā purastādvyākhyāsye pādmaṃ kalpam atho śṛṇu //

47. The measure of time in its gross and subtle aspects, the definition of *kalpa* and its divisions, I shall fully explain later on (in the third skandha) ; and now I shall fully describe the *Padma kalpa* ; listen to it.