Shikwa is the most famous poem of Dr. Iqbal. There are two parts of this poem named "Shikwa" and "Jawab-e-Shikwa". In Shikwa, he expressed an oppressed and frustrated Muslim's feelings, who is  complaining to Allah Almighty. In its second part, he assumed if Almighty Lord Himself is addressing to this complaining Muslim and answering to his protest.