Bhai Bula, figures in Bhai Gurdas's roster of prominent Sikhs of the time of Guru Ram Das, Varan, XI. 17. Bhai Gurdas describes him as Bula the Dealer in Truth.
1. Mani Singh, Bhai, Sikhan di Bhagat Mala. Amritsar, 1955
2. Santokh Singh, Bhai, Sri Gur Pratap Suraj Granth. Amritsar, 1926-37