Devibhagavatapurana 4.2.35

4.2.35

tapasā dānayajñaiśca mānavaścendratāṃ vrajet |
kṣīṇe puṇye'tha śakro'pi patatyeva na saṃśayaḥ ||

Human beings, by dint of their practise of penance, religious austerities alms givings and sacrifices, rise to Indrahood. Indra, in his turn, when the effects of his good actions cease, comes down to inferior births! there is no doubt of it.