The one whose testimony is to be rejected
حَدَّثَنَا مُحَمَّدُ بْنُ خَلَفِ بْنِ طَارِقٍ الرَّازِيُّ، حَدَّثَنَا زَيْدُ بْنُ يَحْيَى بْنِ عُبَيْدٍ الْخُزَاعِيُّ، حَدَّثَنَا سَعِيدُ بْنُ عَبْدِ الْعَزِيزِ، عَنْ سُلَيْمَانَ بْنِ مُوسَى، بِإِسْنَادِهِ قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لاَ تَجُوزُ شَهَادَةُ خَائِنٍ وَلاَ خَائِنَةٍ وَلاَ زَانٍ وَلاَ زَانِيَةٍ وَلاَ ذِي غِمْرٍ عَلَى أَخِيهِ " .
The tradition mentioned above (No. 3593) has also been transmitted by Sulayman ibn Musa through a different chain of narrators. This version has: The Messenger of Allah (ﷺ) said: The testimony of a deceitful man or woman, of an adulterer and adulteress, and of one who harbours rancour against his brother is not allowable.