Humayun captured Gujarat from Bahadur Shah and appointed Askari as its governor. But soon Bahadur Shah recovered Gujarat from Askari who fled from there. In the meantime Sher Khan became powerful in the east. Humayun marched against him and in the Battle of Chausa, held in 1539, Sher Khan destroyed the Mughal army and Humayun escaped from there. Humayun reached Agra to negotiate with his brothers.

But as they were not cooperative, Humayun was forced to fight with Sher Khan alone in the Battle of Bilgram in 1540. This battle was also known as Battle of Kanauj. Humayun was thoroughly defeated by Sher Khan. After losing his kingdom, Humayun became an exile for the next fifteen years.

Sur Interregnum (1540-1555)

The founder of the Sur dynasty was Sher Shah, whose original name was Farid. He was the son of Hasan Khan, a jagirdar of Sasaram in Bihar. Later, Farid served under the Afghan ruler of Bihar, who gave him the title Sher Khan for his bravery. We have already seen how he defeated Humayun at the Battle of Chausa and became the ruler of Delhi in 1540.

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