Prime Minister Muhammad Shehbaz Sharif has paid tribute to the gatekeeper Madad Ali Jamali, who saved Shalimar Express train from a major accident by risking his life at the railway crossing near Nawab Shah Railway station.In a statement, the Prime Minister said we all need to learn from Madad Ali Jamali's selfless spirit.The Prime Minister said the whole nation is proud of Madad Ali, who performed his duties with sincerity.Source: Radio Pakistan