رسائل النبي إلى الملوك

In late 6 AH and early 7 AH — in the months after the Treaty of Hudaybiyyah created a political ceasefire with Mecca — the Prophet ﷺ dispatched formal letters to the major rulers of the known world, inviting them to Islam. The letters were sealed with the Prophet's ﷺ personal seal ring inscribed 'Muhammad Rasul Allah.' Recipients included Heraclius of Byzantium, Khosrow Parviz of Persia, the Negus of Abyssinia, al-Muqawqis of Egypt, and the Ghassanid king. The responses varied enormously. Heraclius received his letter with evident intellectual respect — he subjected Abu Sufyan (who happened to be in Byzantine territory) to systematic questioning about the Prophet ﷺ and concluded privately that the signs of a true prophet were present, but feared losing his kingdom and did not convert. Khosrow tore his letter in contempt; the Prophet ﷺ, informed of this, said 'He has torn his kingdom' — Khosrow was assassinated by his own son within months and the Persian empire fell to Muslim armies within a generation. Al-Muqawqis of Egypt received the envoy Hatib ibn Abi Balta'ah with honor and sent the Prophet ﷺ gifts including Mariyah al-Qibtiyyah, who became the Prophet's ﷺ wife and the mother of his son Ibrahim. The Negus received his letter with faith — he had known the Prophet ﷺ through the Muslim emigrants who had lived in his kingdom for years — and the Prophet ﷺ later prayed the funeral prayer (salat al-gha'ib) over him when he died, an honor given to no other non-Muslim ruler. The letters represent the moment the Prophet ﷺ began acting on Islam's universal scope: not a religion for Arabia only, but an invitation to all of humanity, dispatched from Medina to the thrones of the world's greatest empires. The diplomatic initiative confirmed the Quranic principle that the Prophet's ﷺ mission was universal — 'We have not sent you except as a mercy to all the worlds' (21:107) — and that Hudaybiyyah's ceasefire was not merely peace for Arabia but the opening of space for Islam to reach beyond it. The letters are also among the earliest examples of formal Islamic correspondence, establishing the conventions of the basmala opening and the Prophetic seal that Islamic statecraft would continue for centuries.