Nu'aym ibn Abdullah al-Nahham

A companion from the ʿAdī clan of Quraysh, the same clan as ʿUmar ibn al-Khaṭṭāb. He had already accepted Islam secretly at the time of ʿUmar's conversion but had not publicly announced it, making him a "mustaḍʿaf", someone unable to openly declare their faith due to persecution.

His critical role: the day ʿUmar took his unsheathed sword and set out to kill the Prophet (SAW), Nuʿaym saw him in the streets of Makkah and recognized the killing intent. He intervened, not by confronting him directly (that would have been suicidal), but by redirecting him: "What are you doing? Do you think the Banū ʿAbd Manāf will let you live one day after killing one of their own? And if you truly want to do something, go fix your own family first, your sister Fāṭimah and her husband Saʿīd have already accepted Islam."

He was calculating that Omar would not harm his own sister, and that by the time Umar reached her house and the encounter unfolded, the Prophet would be safe. This redirection was arguably one of the most consequential acts of tactical wisdom in the early Seerah.

His nickname "al-Naḥḥām" means "the one who sighs frequently", reportedly because he would sigh out of his love and yearning for Allāh, even in secret. He later emigrated and became a respected companion.