Sayyiduna Abu Zayd (may Allah be pleased with him) narrates: The Prophet Muhammad (peace and blessings be upon him) said to me: Come close and rub your hand on my back. The narrator says: I removed the cloth from the blessed back of the Prophet (peace and blessings be upon him), then I took the Seal of Prophethood between my two fingers and pressed it lightly. He was asked: What was that seal? He replied: It was some hair that was gathered at one place near his shoulder.