The word(s) "وَطَهِّرْ" appears in 2 verse(s) in Quran.

(1) وَإِذْ قَالَتِ الْمَلَائِكَةُ يَا مَرْيَمُ إِنَّ اللَّهَ اصْطَفَاكِ وَطَهَّرَكِ وَاصْطَفَاكِ عَلَىٰ نِسَاءِ الْعَالَمِينَ

(سورة آل عمران, Aal-i-Imraan, Chapter #3, Verse #42)
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(2) وَإِذْ بَوَّأْنَا لِإِبْرَاهِيمَ مَكَانَ الْبَيْتِ أَن لَّا تُشْرِكْ بِي شَيْئًا وَطَهِّرْ بَيْتِيَ لِلطَّائِفِينَ وَالْقَائِمِينَ وَالرُّكَّعِ السُّجُودِ

(سورة الحج, Al-Hajj, Chapter #22, Verse #26)
(Arabic, Transliteration, Urdu (Ahmed Ali), Urdu (Jalandhry), Farsi, Yusuf Ali, Shakir, Picthal, Mohsin Khan, French, Spanish, Indonesian, Malay, German, Bosnian, Russian, Dutch, Italian, Portuguese, Tafsir - Jalal ad-Din, Tafsir - King Fahad Quran Complex)