Earlier quoted context omitted.
With all due respect, your comment comes off as a bit ignorant and rude. A few points: Firstly, the Qur'an wasn't written by the Prophet, he would dictate it and it would be written by his scribes. Secondly, it's hard to argue that Islam has had a negative effect on Arabic or caused it to lag behind. In fact, it's easy to argue for the opposite. It's a historical fact that the Arabic language developed and proliferat…
I don’t think anybody said that Arabic has suffered a complete standstill, and it has doubtlessly evolved significantly. But if you compare it with basically any other major language, it’s clearly much, much more conservative. If you are a native English speaker, understanding English from 1,000 years ago is like learning a completely different language. If you are a native speaker of Italian, you cannot understand a…
https://en.wikipedia.org/wiki/Varieties_of_Arabic
A rough equivalent in both time and space is how the Vatican continues to use Latin, but the rest of the Roman Empire has splintered into Italian, French, Spanish, Romanian, etc.