Shama-il Tirmidhi Chapter 2, Hadith Number 5 (19).
`Ilbaa bin Ahmar Al-yashkari says that the Sahaabi, Abu Zayd `Amr bin Akhtab Al-Ansaari Radhiallahu Anhu said to me: “Rasullullah (Sallallahu alaihi wasallam) once asked me to massage his waist. When I began massaging the back, accidentally (by chance) my fingers touched the Seal of Prophethood. `Ilbaa (Radhiallahu anhu) says: `I asked Amr (Radhiallahu anhu), what is the Seal of Prophethood?’ He replied: `It was a collection of few hair'”.
This is not contrary to the first hadith, because there was hair around the Seal of Prophethood. He only mentioned the hair.