طَهِّرْ
Appears 2 times in the Quran.
(Root: طهر)
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22:26 وَإِذْ بَوَّأْنَا لِإِبْرَٰهِيمَ مَكَانَ ٱلْبَيْتِ أَن لَّا تُشْرِكْ بِى شَيْـًٔا وَطَهِّرْ بَيْتِىَ لِلطَّآئِفِينَ وَٱلْقَآئِمِينَ وَٱلرُّكَّعِ ٱلسُّجُودِ
And when We assigned to Ibrahim the place of the House, saying: Do not associate with Me aught, and purify My House for those who make the circuit and stand to pray and bow and prostrate themselves.
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And your garments do purify,