The History of Shēr Shāh (Tārīkh-i Shērshāhī) 3.17.5

3.17.5

When the Emperor saw supernatural beings fighting against him, he acknowledged the work of God, abandoned the battle to these unearthly warriors, and turned the bridle of his purpose towards his capital of Agra. He received no wound himself, and escaped safe and sound out of that bloodthirsty whirlpool. The greater part of his army was driven into the river Ganges. * * * Sher Shah being at his ease regarding the Mughals, wrote to Shuja'at Khan, whom he had left as faujdar, in the country of Bihar and Rohtas, to besiege the fort of Gwalior, and he told the bearer of the farman : "The son of Shuja'at Khan, by name Mahmud Khan, has been slain; do not tell him before he has quitted Rohtas, lest on hearing of the death of his son he delays and puts off his coming." As soon as he received the farman, Shuja'at Khan went and besieged Gwalior. From Kanauj Sher Shah despatched Barmazid Gur with a large force in advance, but directed him not to hazard an engagement with the Emperor Humayun, and he also sent another force under Nasir Khan towards Sambhal. Having speedily settled the country about Kanauj, he betook himself in the direction of Agra.