Stem رِسَٰلَٰتِ has 3 unique word forms and appears 7 times in the Quran.

Word Translation Occurrences
رِسَٰلَٰتِ Messages, the Messages, (the) Messages 10
بِرِسَٰلَٰتِي with My Messages 2
وَرِسَٰلَٰتِهِۦۚ and His Messages 2