The friend selling the torch tells the other friend that both of them have the same profession, that is, of selling the torch. This is because they both use the example of darkness in order to attain light. The first friend uses it in order to sell his torches, while the other friend uses it to teach his audience about the path of spirituality to attain light. The saint is against this statement and believes that both of them have completely different paths of approach, but the friend selling the torch claims that he is right. He does this by stating that no one has ever started by saying that the outside world is filled with brightness, they all start by claiming that it is filled with darkness, and therefore they are not different from each other. For a more detailed explanation, visit Vedantu.