Stem يُزَكِّي has 3 unique word forms and appears 6 times in the Quran.

Word Translation Occurrences
وَيُزَكِّيهِمۡ and purifying them 4
يُزَكِّيهِمۡ purify them, will He purify them 4
وَيُزَكِّيكُمۡ and purifies you 2
وَيُزَكِّيهِمۡۖ and purify them 2