Mu'awiya came to Medina and he addressed us and he took out a bunch of hair and said: What do I see that one of you does but that what the Jews did? (I can well recall) that when this act (adding of artificial hair) reached Messenger of Allah ﷺ, he named it as cheating. (Using translation from Muslim 2127c)
قَدِمَ مُعَاوِيَةُ الْمَدِينَةَ فَخَطَبَنَا وَأَخْرَجَ كُبَّةً مِنْ شَعَرٍ فَقَالَ مَا كُنْتُ أَرَى أَنَّ أَحَدًا يَفْعَلُهُ إِلَّا الْيَهُودَ إِنَّ رَسُولَ اللهِ ﷺ بَلَغَهُ فَسَمَّاهُ الزُّورَ أَوِ الزِّيرَ شَكَّ مُحَمَّدُ بْنُ جَعْفَرٍ