Why does the Quran say that semen comes from your back bone?

This is incorrect again. The critic focuses on the verses 86:6-7, especially verse 7 as this is where their contention is directed. The critic claims the Quran (86:7) is telling us that semen is produced between the backbone (sulb) and the ribs (tara’ib). The Arabic words mentioned by the Quran are sulb and tara’ib. Tara’ib is thought to mean ribs, though there is some dispute. However, the chief point of interest is the word sulb. Sulb can be translated as ‘loins’ or ‘backbone’ or ‘lower back’. The critic favours the translations which use the word ‘backbone’ as they use it to attack the Quran by claiming the Quran teaches that semen is produced between the backbone (sulb) and the ribs (tara’ib).

that book needs to be burned