Sahih Bukhari
Oaths and Vows
Volume: 008 / Book Number: 078 / Hadith Number: 694
Narrated Ibn 'Abbas:
While performing the Tawaf around the Ka'ba, the Prophet passed by a person leading another person by a hair-rope nose-ring in his nose. The Prophet cut the hair-rope nose-ring off with his hand and ordered the man to lead him by the hand.