Devibhagavatapurana 4.2.26

4.2.26

yadbhītāstu vimūḍhātmā kastaṃ sevitumicchati |
garbhe tudanti kṛmayo jaṭharāgnistapatyadhaḥ ||

Worms and insects torment the Jîvas in the womb; the digestive fire of the stomach heats it from below, whereas it is always fearfully tied down on all sides by the flesh, enclosing its fat or marrow. O King; Not a trace of happiness is visible there.