From Sahih Muslim (Hadith 5580):
Sa'id b. Musayyib reported: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 Allah's Messenger (ﷺ), he named it as cheating
Reference: Muslim 5580