Peace,
plz check the spelling of the bold word in a hard copy of the holy quran the mistake is that there is no y'aa after el t'aa there is small alef
thanks for concern
It is a correct spelling.
The copy you are looking at is the 'modern' style of writing which adds the 'small alif', while the original text did not use this method, but used a 'ya' to indicate a short alif.
You can see the actual text below for 3171 (3rd line down)
http//goldkoran.mse.jhu.edu/htdocs/mrsid/kbin/show.pl?client=Koran&image=Koran.053v.sid