Stem أَثَٰبَ has 3 unique word forms and appears 3 times in the Quran.

Word Translation Occurrences
فَأَثَٰبَكُمۡ So (He) repaid you 2
فَأَثَٰبَهُمُ So rewarded them 2
وَأَثَٰبَهُمۡ and rewarded them 2