beliefs believers ethnic hajis imam Islam listeners listening men mosque Muslims pillars religious sitting skull caps visiting visitors waiting worshippers arabic authoritative authority book colored coloured decorated faith guidance Koran Moslems obedience pages pink Quran recitation recite religion Sacred script Scripture suras text words architectural architecture Asian belief colorful coloring colors colourful colouring colours cultural culture decorative design green growth islamic leaves masjid minaret minarets plants prayer rooftop Singapore towers appearance art artistic artistry calligraphy color colour decoration handwriting language Shia Shi’ite bowed bowing building center centre communicate community concepts congregation Congregational Friday homage jama'ah male muslim outside outside-overflow overflow perspectives prostrate prostration salat symbol symbolic worship