In 641, Ayadh bin Ghanam died. In this year, too, died Bilal the Muazzin and Khalid's defeated foe, Heraclius, Emperor of Rome. The following year it was Khalid's turn to go.
Some time in 642 (21 Hijri), at the age of 58, Khalid was taken ill. We do not know the nature of his illness, but it...