وَفَّيتَyou have fulfilled شهرَthe month of الصَّومِfasting واجبَdue حَقَّهِits right
وَفَّيتَ شهرَ الصَّومِ واجبَ حَقَّهِ
فالأجرُso the reward فيهِin it ثِابتٌassured ويزيدُand increases
فالأجرُ فيهِ ثِابتٌ ويزيدُ
You have given the month of fasting its rightful due;
You have fulfilled the month of fasting its due
So the reward therein is assured and increases.
So the reward in it is assured and increases
Claude 2 is inferred from the historical translator configuration. The original record does not identify its model.