Nasb-and-the-Nawasib

Ibn Taymiyyah has alluded to this when he said:
كان من شيعة عثمان من يسب عليا ويجهر بذلك على المنابر وغيرها لجل القتال الذي كان بينهم وبينه
Amongst the partisans of ʿUthmān I there were some who reviled ʿAlī
I, openly doing so on the pulpits and in other places due to the battles
which ensued between them and him. 1
It is not far-fetched to assume that this was the prime reason why Qaṭāmī 2 wanted
the murder of ʿAlī I as part of her dowry, for the historians have stated that
her father and brothers were martyred on the Day of Nahrawān when fighting
against ʿAlī I. 3
The Third Cause: The Belief that ʿAlī I was a Kāfir
This belief did not take root within those who fought him in the battles of Jamal
and Ṣiffīn. Instead it took root amongst his partisans who violated their allegiance
after the call for arbitration; they detracted by rebelling against him and were
thus known as the Khawārij (rebels) according to prominent view. 4
The cause of this belief was that according to them ʿAlī I gave men the
authority to pass judgement in the Dīn of Allah and gave preference to their views
over the law of Allah E. This according to them constituted disbelief because
according to the text of the Qurʾān passing judgements was solely the purview of
1 Minhāj al-Sunnah al-Nabawiyyah 6/201.
2 Qaṭāmī bint Shajnah ibn ʿAdī ibn ʿĀmir. A woman belonging to the Banū Taym ibn al-Rubāb. She
held the ideology of the Khawārij. When ʿAbd al-Raḥmān ibn Muljim intended to marry her she placed
a condition that her dowry be three thousand and the murder of ʿAlī I. See: al-Ṭabaqāt al-Kubrā
3/36; al-Thiqāt 2/302; Mustadrak al-Ḥākim 3/154; al-Ikmāl 7/274.
3 Tārīkh al-Ṭabarī 3/156; al-Muntaẓam 5/174; al-Kāmil fī al-Tārīkh 3/255; al-Bidāyah wa al-Nihāyah 7/327.
For more details regarding the aftermath of the battle of Nahrawān and its impact upon the people of
Kūfah see: Ḥarakah al-Khawārij, Nashʾatuhā, wa Taṭawwuruhū ilā Nihāyah al-ʿAhd al-Umawī p.48.
4 Ibn Qutaybah: Gharīb al-Ḥadīth 1/252; Sharḥ al-Nawawī ʿalā Ṣaḥīḥ Muslim 7/164; al-Suyūṭī: Sharḥ Sunan
al-Nasāʾī 7/119.
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