Edward William Lane, An Arabic-English Lexicon, ط

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5 تطهّر ذ , inf. n. تَطَهُّرٌ, is sometimes changed into اِطَّهَّرَ, inf. n. اِطَّهُّرٌ, the ت being incorporated into the ط, and this requiring a conjunctive ا, (Sgh, K,) in order that the word may not begin with a quiescent letter: (Sgh:) and طَهُورٌ is also an inf. n. [or rather a quasi-inf. n.] (Sb, K) of تَطَهَّرَ, (Mgh, TA,) like as وَضُوْءٌ is [said to be] of تَوَضَّأَ. (TA.) The meaning is, [He became cleansed, or purified: or he cleansed, or purified, himself: and] he washed himself. (Mgh.) You say, تطهّر بِالمَآءِ [He cleansed, or purified, or washed, himself with water]: (S:) he performed the ablution termed الوُضُوْء: and that termed الاِسْتِنْجَآء; (A;) as also تطهّر alone, as used in the Kur ix. 109: (Mgh, TA:) and the same verb, alone, is expl. as signifying he made use of water, or what supplied its place; thus used in the Kur v. 9. (TA.) In the Kur vii. 80 and xxvii. 57, the verb is used derisively. (TA.) You say also, تطهّرت, (Mgh, Msb, K,) and اِطَّهَّرَتْ, (Mgh,) meaning, She cleansed, or purified, herself by washing, from [the pollution of] the menstrual discharge, (Mgh, Msb, K,) &c.; (K;) as also ↓ طَهَرَتْ and طَهُرَتْ; (Msb, * K;) agreeably with what is said in the B, that طَهَرَ and طَهُرَ and اطّهّر and تطهّر have the same signification: (TA:) or تطهّرت and اطّهّرت have this signification; but the unaugmented verb has the signification first assigned to it, or “ her discharge of blood stopped: ” (Abu-l-'Abbás, IAar:) in the Kur ii. 222, some read حَتَّى يَطْهُرْنَ; and others, حَتَّى يَطَّهَّرْنَ: but the latter reading is the preferable, on account of the difference between the two forms of the verb, just mentioned: (Abu-l-'Abbás:) or the law which allows not the touching a woman until she has performed the ablution mentioned above shows the two forms of the verb to be the same in signification. (TA.) ― -b2- Also (tropical:) He removed himself far from unclean things, or impurities. (S, Mgh, K. *) ― -b3- (tropical:) He refrained from sin, (K, TA,) and from what was not good: (TA:) he removed himself far from low, or ignoble, habits: and in this sense, accord. to some, it is used in the Kur vii. 80 and xxvii. 57. (TA.) And تطهّر مِنَ الإِِثْمِ (tropical:) He removed himself far from sin. (A.)