The elder son of Bhai Surat Singh, Bhai Gurdas Singh was born in 1825 Bikrami. He was an outstanding scholar. He became the chief of the Taksal after the demise of his father Bhai Surat Singh. He served at Sri Harmandir Sahib the teachings of the Gurbani and used to give his religious discourses at that place. He has made a great contribution towards the history of Sikhism.
His son Sher Singh was martyred during the war. Someone asked him at that time, what is the state of your mind now ? It was at that time that Bhai Gurdas Singh uttered the following couplet from Sri Guru Granth Sahib :
As long as you have attachment with the world,
You are bound to be punished by Dharmrai.