So Viśvanātha Cakravartī Ṭhākura, in connection with the verse, vyavasāyātmikā-buddhir ekeha kuru-nandana, niścayātmikā-buddhiḥ... (BG 2.41) So Viśvanātha Cakravartī Ṭhākura says that "The instruction which I have received from my spiritual master, that is my life and soul." This is called niścayātmikā-buddhiḥ, means assurance: "Whatever I have received, the order from my spiritual master, that will give me salvation." Or even no salvation. It doesn't matter. A real devotee, a servant, does not expect anything, but kāryam: "It is my duty. It is my duty."