Silsilat al-Ahadith al-Sahihah

Abu Nadrah ‘Awfi says: I asked Sayyiduna Abu Sa‘id al-Khudri (may Allah be pleased with him) about the Seal (of Prophethood) of the Messenger of Allah (peace and blessings be upon him). He said: The Seal of Prophethood was a raised piece of flesh on his blessed back.