One verse

Srimad Bhagavatam 3.31.8

3.31.8

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

ulbena samvrtas tasminn antrais ca bahir avrtah aste krtva sirah kuksau bhugna-prstha-sirodharah

ulbena
by the amnion
samvrtah
enclosed
tasmin
in that place
antraih
by the intestines
ca
and
bahih
outside
avrtah
covered
aste
he lies
krtva
having put
sirah
the head
kuksau
towards the belly
bhugna
bent
prstha
back
sirah-dharah
neck.

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.