ʿAmmar ibn Yasir was one of the first Muslims of Mecca, persecuted for his faith together with his parents; his mother Sumayya is counted as the first martyr of Islam. While the mosque of Medina was being built, the Prophet ﷺ said of him: “Poor ʿAmmar! The rebellious group will kill him; he calls them to Paradise and they call him to the Fire” (al-Bukhari 447). He was killed at Siffin in the year 37 of the Hijra.
ʿAmmar is an intensive form of the root ʿ-m-r, which combines the idea of life (ʿumr, “lifespan”) with that of populating, building and maintaining a place (ʿimara): “one who builds, who brings life and prosperity”. The lexicographers also report, from Ibn al-Aʿrabi, that ʿammar describes a man firm in his faith, devoted to prayer and fasting. The Quran uses this root for those who keep Allah’s mosques alive (9:18).
The mosques of Allāh are only to be maintained by those who believe in Allāh and the Last Day and establish prayer and give zakāh and do not fear except Allāh, for it is expected that those will be of the [rightly] guided.
Have you made the providing of water for the pilgrim and the maintenance of al-Masjid al-Ḥarām equal to [the deeds of] one who believes in Allāh and the Last Day and strives in the cause of Allāh? They are not equal in the sight of Allāh. And Allāh does not guide the wrongdoing people.