To the letter they followed him

'Utayy ibn Damura said, "I saw a man with my father who was consoling another man in the way people used to console each other in the Jahiliyya.

My father bit him and would not use his kunya.

His companions looked at my father and he said, 'It appears that you disapprove of that.'

He said, 'I will never respect anyone who does this! I heard the Prophet, sallallaahu alayhi wa sallam, say, "If someone consoles people in the way people consoled each other in the days of the Jahiliyya, then bite him, and do not use his kunya."'"

al-adab al-mufrad
Hadiith No. 963

This is the Companion (may Allaah be pleased with him). He followed what the Messenger of Allaah (sallallaahu alayhi wa sallam). He bit the man. He refused to use his kunya. 

Anyone who would have done this today would have been labeled a Zaahiri or told that the hadith is not to be acted upon in this manner. Excuses would have been made for what the Hadiith meant. 

But this was not the way of the Companions. They acted on the Hadiith exactly as it was. Do not let people fool you and misguide you from the way of the Messenger of Allaah (sallallaahu alayhi wa sallam).

Follow only the Qur'aan and Sunnah.