It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) passed by a man while performing Tawaf of the Ka'bah, who had a ring in his nose and another man was guiding him (making him perform Tawaf). So the Prophet cut it off with his blessed hand, then ordered him to hold him by his hand.
Hadith Referenceمسند اسحاق بن راهويه / كتاب المناسك / 336
Hadith Takhrij«بخاري ، كتاب الحج ، باب اذا راي سيراً اوشياً بكرة فى الطواف قطعه ، رقم : 1621 . سنن ابوداود ، رقم : 3302 . سنن نسائي ، رقم : 2920»