After purchasing the land to construct the musjid, Rasulullah (sallallahu ‘alaihi wasallam) instructed the Sahaabah (radhiyallahu ‘anhum) to cut down the date palms and level the graves of some disbelievers that were on the land. Rasulullah (sallallahu ‘alaihi wasallam) then instructed them to produce unbaked bricks, and he himself joined the Muhaajireen and Ansaar in the production of these bricks as well.