Bhai Piraga, or Parag Das as he is named in the Bhatt Vahis, was the son of Gotam, a Chhibbar Brahman of village Kariala now in Jehlum district of Pakistan. Bhai Piraga embraced Sikh faith in the time of Guru Arjan. In the time of Guru Hargobind, he distinguished himself as a soldier and fought in the battles of Ruhela and Amritsar. According to the Bhatt VahTs, Bhai Mati Das and Bhai Sati Das, who remained in attendance upon Guru Tegh Bahadur and who were martyred with him at Delhi in 1675, were the grandsons of Bhai Parag Das.
1. Mani Singh, Bhai, Sikhdn di Bhagat Maid. Amritsar, 1955
2. Santokh Singh, Bhai, Sri Cur Pratap Suraj Cranth. Amrtisar, 1927-35