Amr ibn Umayyah ad-Damri

ʿAmr ibn Umayyah al-Ḍamrī was a Muhājir Companion who, along with al-Mundhir ibn Muḥammad, had been away from camp on an errand when the massacre at Biʼr Maʿūnah occurred (4 AH), and returned to find vultures circling the site. When the two debated whether to press forward or return to Madinah with news, ʿAmr argued they should report back; al-Mundhir insisted on advancing anyway and was killed, while ʿAmr was captured and unexpectedly released. On his way back to Madinah, not knowing that two travelers he met belonged to a tribe under the Prophet's (ﷺ) protection, ʿAmr killed them out of fear for his life, only discovering their letter of protection afterward. He carried this guilt back along with the news of the massacre; the Prophet (ﷺ) subsequently paid blood money to the victims' relatives out of the Muslim community's collective responsibility, though ʿAmr himself had acted in good-faith error.