1 verse has
“تطهيرا”
in Edition Simple Clean / Al-Ahzaab (The Clans)
33:33وقرن في بيوتكن ولا تبرجن تبرج الجاهلية الأولى ۖ وأقمن الصلاة وآتين الزكاة وأطعن الله ورسوله ۚ إنما يريد الله ليذهب عنكم الرجس أهل البيت ويطهركم تطهيرا
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Those who spend their wealth by night and day, privately and publicly, will receive their reward from their Lord. They have nothing to fear, nor shall they grieve.
The Holy Quran · Al-Baqara (The Cow) · 2:274