طَهُور
Appears 2 times in the Quran.
(Root: طهر)
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25:48 وَهُوَ ٱلَّذِىٓ أَرْسَلَ ٱلرِّيَٰحَ بُشْرًۢا بَيْنَ يَدَىْ رَحْمَتِهِۦ وَأَنزَلْنَا مِنَ ٱلسَّمَآءِ مَآءً طَهُورًا
And He it is Who sends the winds as good news before His mercy; and We send down pure water from the cloud,
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76:21 عَٰلِيَهُمْ ثِيَابُ سُندُسٍ خُضْرٌ وَإِسْتَبْرَقٌ وَحُلُّوٓا۟ أَسَاوِرَ مِن فِضَّةٍ وَسَقَىٰهُمْ رَبُّهُمْ شَرَابًا طَهُورًا
Upon them shall be garments of fine green silk and thick silk interwoven with gold, and they shall be adorned with bracelets of silver, and their Lord shall make them drink a pure drink.