Yazid bin Abu Ubaid says that once I saw a scar from a wound on the shin of Sayyiduna Salamah bin Akwa’. I asked him, “O Abu Muslim! What is this scar?” He replied, “I received this wound during the Battle of Khaybar. When I was struck, people said, ‘Salamah is finished.’ But then I was brought to the Prophet (ﷺ), and the Prophet (ﷺ) blew on it three times, and since then I have never felt any pain from it again.”
Hadith Referenceمسند احمد / مسند المدنيين رضي الله عنهم اجمعين / 16514