In this Katha clip, Sant Giani Hari Singh (Randhawe Wale) provides the preface to the Shabad "Eaek Suaan Dhue Suaanee Naal," found on Ang 24 of Sri Guru Granth Sahib Ji Maharaj. The preface narrates how Sri Guru Nanak Dev Ji tested Baba Buddha Ji, Bhai Bhagirath, Bhai Sadharan, and Bhai Lehna Ji to determine who would become the next Guru.