Luqman who was a wise person served his officer when he was a young boy. One day his master said. Slaughter one of sheep and roast the best part of its meat for me. Luqman obeyed his master and roasted the tongue of the sheep for his master. The next day master called Luqman and said, roast the worst part of sheep today. Luqman again roasted the tongue of sheep for his master. When officer sat down to eat, he was startled to see the roasted tongue again. He felt curios and wanted to know the reason. Luqman said. If a tongue is honest and truthful then it is best part of body. But when it tells lies and utter dishonest words, then it is worst part of body.