The word(s) "purifying" appears 4 time(s) in 4 verse(s) in Quran in Saheeh International translation.

(1) Just as We have sent among you a messenger from yourselves reciting to you Our verses and purifying you and teaching you the Book and wisdom and teaching you that which you did not know.

(2) Certainly did Allah confer [great] favor upon the believers when He sent among them a Messenger from themselves, reciting to them His verses and purifying them and teaching them the Book and wisdom, although they had been before in manifest error.

(3) It is He who has sent among the unlettered a Messenger from themselves reciting to them His verses and purifying them and teaching them the Book and wisdom - although they were before in clear error -

(4) Upon the inhabitants will be green garments of fine silk and brocade. And they will be adorned with bracelets of silver, and their Lord will give them a purifying drink.