The Jumu'ah (Friday) prayer is one form of congregational worship in Islam. It takes place every Friday. Regular attendance at the Jumu'ah prayer is enjoined on the believer. According to a Saying of Muhammad (sa) this congregational prayer is twenty-five times more blessed than worship performed alone. (Bukhari)

“… (He who) offers the Prayers and listens quitely when the Imam stands up for sermon, will have his sins forgiven between that Friday and the next”(Bukhari)