Consequences : In the absence of the sultan, Delhi was now exposed to renewed attacks by the Mongols. Realizing his folly, Muhammad bin Tughlaq shifted his capital back to Delhi after 2 years. The people were ordered to return. The suffering and mental agony caused great resentment. The experiment was a dismal failure. It had drained the treasury and reduced the grand and prosperous capital of Delhi to a mere shadow of its former self. Daulatabad, a monument of misdirected energy, became a deserted city.