bin Khalifah al-Kalbi (Arabic: دِحْيَة ٱبْن خَلِيفَة ٱلْكَلْبِيّ‎, Diḥyah al-Kalbīy), sometimes spelled Dahyah, was the envoy who delivered the Muslim prophet Muhammad's message to the Roman Emperor Heraclius. According to Muhammad's wife Aisha, he saw Jibril twice “in the form that he was created” and on other occasions as a man resembling Dihyah ibn Khalifah al-Kalbi, an extraordinarily handsome disciple of Muhammad. Two similar narrations have been recorded through Abu Uthman in Sahih al-Bukhari that reports an incident witnessed by Muhammad's wife Umm Salama: A hadith attributed to reports: