Usually, worship services in the Gurdwara follow common patterns. "Kirtan" is singing the holy hymns. "Katha" is reading, and then explaining, the hymns. "Ardas" is prayer. Six verses of Anand Sahib may be sung. There may also be "Vak" or "Hukam", where one random hymn from Guru Granth Sahib is read. This is the Guru's message or 'Order' of the day to the Sangat. After the Hukam is done, "Karah Parshad" is distributed. Then "Langar", food from the Guru's kitchen, is served.