“The Testimony of a man or woman who is treacherous, or of one who has been subjected to one of the Haad punishments of Islam, or of one who bears a grudge against his brother, is not permissible.” (Using translation from Ibn Mājah 2366)
قَالَ النَّبِيُّ ﷺ لَا تَجُوزُ شَهَادَةُ خَائِنٍ وَلَا خَائِنَةٍ وَلَا مَحْدُودٍ فِي الْإِسْلَامِ وَلَا مَحْدُودَةٍ وَلَا ذِي غِمْرٍ عَلَى أَخِيهِ