Sahih Bukhari Volume 004, Book 056, Hadith Number 694.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 56. Virtues and Merits of the Prophets (PBUH) and his Companions
Narated By Said bin Al-Musaiyab : When Muawiya bin Abu Sufyan came to Medina for the last time, he delivered a sermon before us. He took out a tuft of hair and said, "I never thought that someone other than the Jews would do such a thing (i.e. use false hair). The Prophet named such a practice, 'Az-Zur' (i.e. falsehood)," meaning the use of false hair.