Iqbal is mainly about being free. In this case children are fighting to end child labor
the theme in this book is fighting for your own right and others even if it evolves taking a lot of risk
towerd the middle of the book Iqbal decides to run away. though he gets punished he has a start to his freedom.
also toward the middle of the book Iqbal's leader Hussein khan assigned him to make a difficult rug design That could earn him more rupee. Iqbal puts you in shock when he decides to rip the rug.
later in the book Iqbal once again runs away this time he comes back with a man who is trying to stop child labor. And takes all the children from Hussein. this time it is a chance to let all the children have a free life.
in the end of the book the theme of fighting for your own rights is clearly shown because even if it was heard Iqbal and the other characters fought for what they believed.