فالمسلمونThus the Muslims قُلُوبُهُمtheir hearts لَكَto you أخلَصَتhave become sincerely devoted
فالمسلمون قُلُوبُهُم لَكَ أخلَصَت
وخُلُوصُهاand their sincerity بِرِضَاto the approval of الإلهِGod شَهِيدُa witness
وخُلُوصُها بِرِضَا الإلهِ شَهِيدُ
Thus the Muslims' hearts have become sincerely devoted to you,
The Muslims' hearts are sincere to you
and their sincerity bears witness to God's approval.
And their sincerity is witnessed by God's pleasure
Claude 2 is inferred from the historical translator configuration. The original record does not identify its model.