service: the act of delivering a writ or summons upon someone
entity: that which is perceived or known or inferred to have its own distinct existence (living or nonliving)
id al-adha: the 10th day of Dhu'l-Hijja; all Muslims attend a service in the mosques and those who are not pilgrims perform a ritual slaughter of a sheep (commemorating God's ransom of Abraham's son from sacrifice) and give at least a third of the meat to charity