Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 8

Sanskrit:

उल्बेन संवृतस्तस्मिन्नन्त्रैश्च बहिरावृत: ।आस्ते कृत्वा शिर: कुक्षौ भुग्नपृष्ठशिरोधर: ॥ ८ ॥

ITRANS:

ulbena saṁvṛtas tasminnantraiś ca bahir āvṛtaḥāste kṛtvā śiraḥ kukṣaubhugna-pṛṣṭha-śirodharaḥ

Translation:

Placed within the amnion and covered outside by the intestines, the child remains lying on one side of the abdomen, his head turned towards his belly and his back and neck arched like a bow.

Purport:

If a grown man were put into such a condition as the child within the abdomen, completely entangled in all respects, it would be impossible for him to live even for a few seconds. Unfortunately, we forget all these sufferings and try to be happy in this life, not caring for the liberation of the soul from the entanglement of birth and death. It is an unfortunate civilization in which these matters are not plainly discussed to make people understand the precarious condition of material existence.