For 10 points, name this Indian religion founded by Guru Nanak.
In one holiday of this religion, participants carry saffron-colored triangular flags in a military parade; that holiday is Hola Mahalla. The literature of this religion includes accounts of its founder's life called janam-sakhi, and manuals that detail its Rahit code. This religion's houses of worship include an eatery called a langar. One leader of this religion assembled a group called the Panj Piare, or "Cherished Five," and commenced the amrit sanskar nectar ceremony to initiate them into the Khalsa. Members of this religion may wear a ceremonial sword and uncut hair as part of its Five K's. For 10 points, name this Indian religion founded by Guru Nanak.
In one holiday of this religion, participants carry saffron-colored triangular flags in a military parade; that holiday is Hola Mahalla.
Sikhism [accept word forms such as Sikhs; accept Gurmat]