Wikipedia
Pangat word is taken from the Sanskrit word Pankti which means a line, a row, or a group that is also considered as a synonym for Guru Ka Langar. In a Pangat, the food is served by the volunteers (Sevadars) to people of all religions who sit together to eat. Pangat is about eating food together by sitting in same row without any discrimination on the basis of caste, creed and religion. Pangat and Sangat are coming together from the time of Guru Nanak Dev Ji, the first Guru of Sikhism. The father of Guru Nanak Dev Ji gave him some money for trade, but he spent money by feeding hungry Sadhus and named this as True Transaction (Sacha Sauda). Pangat is related to Sangat, where there is Sangat, there is always a Langar (Food Service). According to believes of Sikhism, we should not let no one who sleep without eating food, and also should not let anyone who die because of hunger. According to the principles of Sikh religion, all the people (Sangat) who are sitting in pangat are sharing food on equal basis. In the history of Sikhism, Once when The Emperor Akbar and the King of Haripur went to meet Guru Amar Das Ji, the third Guru of Sikhism, they both had to eat Langar in the pangat before meeting Guru. The tradition of Pangat is a part of Sikh Religion from the time of Guru Nanak Dev Ji till today.