Expedition of Zayd ibn Harithah (Hisma)
Expedition of Zayd ibn Harithah in Hisma took place in October, 628, 6th month of 7AH of the Islamic calendar. The attack led by Zayd ibn Harithah was a response to Dihyah bin Khalifa Kalbi's call for help, after being attacked by robbers. Muslims retaliated and killed many of the robbers and captured 100 tribe members

Background

Envoys sent to invite people to Islam

After the signing the Hudaibiya Treaty with the Quraysh in Mecca, Muhammad sent several envoys in a few neighboring countries, inviting them to Islam. The following were sent:
Amr bin Umayyah al-Damri to the king of Abyssinia called Ashamah ibn Abjar al-Najashi. Dihyah bin Khalifah al-Kalbi to the Roman Emperor Heraclius
Hatib bin Abi Baltaeh to the king of Egypt called Muqawqis
Allabn Al-Hazermi to Munzer bin Sawa the king of Bahrain called Munzir ibn Sawa Al Tamimi
Amr ibn al-As to the king of Oman called Abd Al-Jalandi
Salit bin Amri to the king of Yamama called Hawza bin Ali
Shiya bin Wahab to Haris bin Ghasanni to the king of Damascus called Harith bin Abi Shamir Al-Ghassani
Abdullah ibn Hudhafah as-Sahmi to the emperor of Persia called Khosrow II. One envoy attacked by bandits
He sent Dhiyah bin Khalifah al-Kalbi to the king of Basra, who would in turn send it to Caesar (Heraclius). In his epistle to Heraclius, the Roman emperor, Muhammad wrote:

"In the name of God, the Most Merciful, the Bestower of all Mercy

From Muhammad, son of Abdullah to Heraclius the Leader of the Romans:

Peace be upon he who follows the guidance. Furthermore, I invite you with the invitation of peace. If you submit then you will find safety and God will double your reward. If you turn away, you will bear the peasants sins. "O People of the Scripture! Come to a common word between us and you: that we shall worship none but God, and that we shall ascribe no partner unto Him, and that none of us shall take others for lords beside God. And if they turn away, then say: Bear witness that we are they who have surrendered (unto Him). — Quran, Chapter: Aal Imran “The House of Joachim” 3:64”

When, after finishing his trip, Dhiyah was returning to Medina ; a group of bandit belonging to Banu Judham looted him of everything he had, when he reached Hisma, a place on the way to Syria and west of Tabuk. Muslim response
Dhiyah approached the Banu Dubayb (a tribe which converted to Islam and had good relations with Muslims) for help. When the news reached Muhammad, he immediately dispatched Zayd ibn Haritha with 500 men to punish them. The Muslim army fought with Banu Judham, killed several of them (inflicting heavy casualties), including their chief, Al-Hunayd ibn Arid and his son, and captured 1000 camels, 5000 of their cattle and a 100 women and boys. The new chief of the Banu Judham who had embraced Islam appealed to Muhammad to release his fellow tribesmen, and Muhammad released them. See also
Military career of Muhammad
List of expeditions of Muhammad

Notes

628
Campaigns ordered by Muhammad