Tawus (may Allah have mercy on him) said that while the Messenger of Allah (peace and blessings be upon him) was performing tawaf, he passed by a man who was leading another man by a ring through his nose. He (peace and blessings be upon him) cut it and said: "Lead him by his hand." And the Messenger of Allah (peace and blessings be upon him) passed by another man who was performing tawaf, tied to another person with a thread or something similar, and the Messenger of Allah (peace and blessings be upon him) cut it and said: "Lead him with your hand."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الحج / 9312