Maybe it can be interpreted as: In this world there are many people who claim to be free, "We are not bound by anything". One often here this, even from muslims. But a muslim is one who says, "My Lord's command is my will. when He says pray, I stop everything and start praying, etc.". Therefore he may be telling such people, that if you are really free then try to avoid death, and try to avoid the eternal Hell in the next. You can never do this.