In babur bani guru nanak dev ji says the mughals will go down in 1540 and then another man will rise. Which is true because the afghans defeated the mughal emperor Hamayun, and sher Shah Suri of Afghanistan was cordinated as the new emperor of delhi in 1540.
Coming in seventy-eight (1521 A.D.), they will depart in ninety-seven (1540 A.D.), and then another disciple of man will rise up. Nanak speaks the Word of Truth; he proclaims the Truth at this, the right time.