 During the time after Guru Har Krishan's death at Delhi, and the uncertainty over who would be the next Guru, Bhai Mati Das, and Bhai Sati Das are sometimes mentioned as being present looking for the Guru or directly after when Baba Makhan Shah Labana found Guru Tegh Bahadur in the village of Bakala where the new Guru was then residing.The new Guru entrusted all his financial activities to Bhai Mati Das, and thus he is sometimes given the name Diwan Mati Das, whereas Bhai Sati Das served Guru Tegh Bahadur as a cook.The two brothers accompanied Guru Teg Bahadur during his two-year stay at Assam.