Umar reported the Prophet's ﷺ saying, so he is a narrator of this Hadith.
By contrast, when a teacher explains a Hadith in the teacher's own words, that explanation does not become the Prophet's ﷺ original wording.
Keep the reported words of the Hadith separate from the teacher's own explanation.
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Rāwī and Ruwāt: Hadith Narrators
Umar reported the Prophet's ﷺ saying, so he is a narrator of this Hadith.
By contrast, when a teacher explains a Hadith in the teacher's own words, that explanation does not become the Prophet's ﷺ original wording.
Keep the reported words of the Hadith separate from the teacher's own explanation.