'From Between the Backbone and the Upper Ribs': A Comparison

S 86:5-7 So let man see from what he was created. / He was created from water pouring out. / Coming out from between the backbone and the upper ribs.

The Quran on Semen Production

One of Musaylimah the 'liar's' extant verses goes:

لقد أنعم الله على الحبلى

أخرج منها نسمة تسعى

من بين صفاق وحشى

Allah has graced the pregnant woman

He has brought out from her a person that has chased

From between peritoneum and entrails.

The author (or one of them) uses a similar construction in another verse, speaking of milk.

S 16:66 And you have in cattle a lesson. We give you to drink from what is in its bellies, from between dung and blood, milk, unadulterated, palatable to the drinkers.

Further reading:

The Challenge - Musaylima

A Musaylima Verse