Jathedar Gurcharan Singh Tohra Institute of Advanced Studies in Sikhism, Bahadurgarh (Patiala) organized an interactive session of students and research fellows with Bhai Mandhir Singh of Panth Sewak Jatha Doaba. Wide range of topics were discussed during this session. While interacting with the audience Bhai Mandhir Singh emphasized that the light of principles is necessary for guided actions and if the light of principles is lost, the action turn misguided in long run.