Sayyiduna Anas (may Allah be pleased with him) narrates: When the Prophet (peace and blessings be upon him) passed along any of the roads of Madinah, the fragrance of musk would come from that road, and people would say: The Messenger of Allah (peace and blessings be upon him) has passed by here.
Imam Abu Ya'la, Imam al-Bazzar and Imam al-Tabarani in al-Mu'jam al-Awsat recorded it, except that (al-Tabarani) recorded these words: "When the Prophet (peace and blessings be upon him) came towards us, we would know it from the purity of his fragrance." The narrators of Imam Abu Ya'la have been declared trustworthy.