Fajarah (فجرة) (fujjār (فجّار) Plural of "fājir" (فاجر)
Evil or Wicked deeds/person
نهج، نهج البلاغة وَ اللَّهِ مَا مُعَاوِيَةُ بِأَدْهَى مِنِّي وَ لَكِنَّهُ يَغْدِرُ وَ يَفْجُرُ وَ لَوْ لَا كَرَاهِيَةُ الْغَدْرِ لَكُنْتُ أَدْهَى النَّاسِ وَ لَكِنْ كُلُّ غُدَرَةٍ فُجَرَةٌ وَ كُلُ فُجَرَةٍ كُفَرَةٌ وَ لِكُلِّ غَادِرٍ لِوَاءٌ يُعْرَفُ بِهِ يَوْمَ الْقِيَامَةِ وَ اللَّهِ مَا اسْتَغْفَلَ بِالْمَكِيدَةِ وَ لَا اسْتَغْمَزَ بِالشَّدِيدَةِ
(The book) ‘Nahj Al-Balagah’ (Imam Ali-asws Ibn Abi Talib-asws said) – ‘By Allah-azwj! Muawiya is not craftier than me-asws, but he betrays and is immoral, and had I-asws not abhorred the treachery I-asws would have been the craftiest of the people, but every ‘فُجَرَةٌ’ treachery is immoral, and every immorality is Kufr, and for every treacherous there will be a flag he would be recognised by on the Day of Qiyamah. By Allah-azwj! I-asws am not oblivious of the plots nor am I-asws overpowered by the difficulties’.[1]
[1] Bihar Al-Awaar – V 40, The book of History – Amir Al-Momineen-asws, Ch 93 H 77