At this place, the daily Hukamnama or the "Order-of-The-Day" is explained to the devotees every morning and evening. A widely spread and covered hall just opposite Sri Guru Ram Das Langar Hall, is a congregation hall. In Harmandir Sahib, Guru Granth Sahib is read or the hymns of Guru Granth Sahib are being sung, but at Diwan hall the Bani (hymns) are explained every morning and evening by the priest (the priest conversed with concept of Bani and Sikh history).

The concept of explaining Bani was initiated by Guru Arjan Dev himself and the tradition is still going on. Within the Diwan Hall complex is a small raised platform covered with a marble canopy. This is the place where Guru Arjan Dev recited Barah Mah (a bani related with the description of twelve months according to Lunar system). Diwan Hall is used for religious functions.