He is best known in Islamic tradition for his role as the courier of a letter from Muhammad to Khusraw Parvez, the King of Persia, and for his imprisonment and torture by Heraclius, the Byzantine Emperor.
Abd Allah bin Hudhafa al-Sahmi carried the letter of Muhammad to Khosrow II, the emperor of the Sassanid Empire (Persia).
When Muhammad heard Khosrow had torn his letter, he made a prayer that Allah tears his kingdom.
[2][3][4][5] Muhammad once sent him as a military leader of some sahabas, on the way he became furious and told them to make coils of fire, and to plunge into it.
[8] After returning from the expedition, the Islamic prophet Muhammad said, obedience to the leader is only wajib in those matters which Allah has permitted.
When talk of Abd Allah's bravery spread throughout the land, the Islamic Caliph Umar ibn al-Khattab, order all the Muslims to kiss the forehead of Abd Allah ibn Hudhafa al-Sahmi, and kissed him on his forehead first.