All scriptures teach that progress in the spiritual path is impossible without sincere faith. Knowing this, some people tend to believe in everything and everybody. But Ramakrishna warned his disciples not to believe others blindly. Rather he advised them to use their discrimination both in the spiritual path as well as in worldly matters. Once Jogin went to a shop and bought an iron pan. He appealed to the religious feeling of the shopkeeper and did not examine the pan closely. After returning home he found that the pan had a crack. When the Master heard about it, he reproved Jogin: “Because you are a devotee of God, does that mean that you should be a fool? Do you think any shopkeeper opens a shop to practise religion? Why did you not examine the pan before you purchased it? Never act so foolishly again. When you go out shopping, first determine the usual price of the item by going around to several shops and then thoroughly examine the thing you want to buy. And do not fail to demand the little extras where allowed.” (Source: God Lived with Them)