Grandiose Reward: It is promised that for someone who builds a Masjid (mosque) in the world, Allah would build for him a city made of gold, silver, gems, rubies, emeralds, and aquamarine, containing 40 million castles, each with 40 million houses, each house having 40 million rooms, each room having 40 million beds, and upon each bed a wife from the Maiden Houries.

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Historical Contributions: 'Ammār contributed to the building of Masjid al Nabawī by carrying two stones, one on his own behalf and the other on behalf of the Messenger of Allāh, underscoring the value of physical involvement in building a Masjid.