ʿAmr ibn Murrah transmitted—through ʿAbd Allāh ibn Salamah—who said:
“I saw ʿAmmār on the Day of Ṣiffīn: an elderly, dark-skinned, tall man, and the spear in his hand was trembling. He declared, ‘By Him in whose Hand my soul rests, I have fought with this spear alongside the Messenger of Allah ﷺ three times, and this is the fourth. Even if they were to fight us until they drove us to the palm-fronds of Hajar, I would still know that we are on the truth and that they are upon falsehood.’ (1)

Al-Wāqidī reported—through ʿAbd Allāh ibn Abī ʿUbaydah, from his father, from Luʾluʾah, the freedwoman of Umm al-Ḥakam bint ʿAmmār—that she described ʿAmmār as: dark-skinned, tall, sturdy, light-eyed, broad-shouldered, and never dyeing his grey hair. (2)

Kulayb ibn Manfaʿah related—from his father—who said: “I saw ʿAmmār at al-Kunāsah: he was black-complexioned, curly-haired, and he was reciting.” Al-Ḥākim recorded it in al-Mustadrak. (3)

ʿUrwah said: “ʿAmmār was one of the confederates of Banū Makhzūm.”

Al-Wāqidī also narrated—from some of ʿAmmār’s family—that ʿAmmār and Suhayb accepted Islam together after thirty-odd men had already done so. This isnād is broken.

Zāʾidah narrated—through ʿĀṣim, from Zirr, from ʿAbd Allāh—who said: “The first person to proclaim his Islam…”