CHHAJJU, BHAI, a devoted Sikh of the time of Guru Hargobind (1595-1644) who was also a brave warrior. He fought valiantly in the battle of Amritsar (1629). Bhai Santokh Singh, Sri Gur Pratap Suraj Granth, ranks him with warriors such as Mohru, Bindhava, and Sujana.