The king was seriously ill. He could not walk, and within a few days, his health deteriorated at a very fast pace.
Just a few days earlier, he was managing them, firing on his own, handling every affair. Now he was resting on his bed.
Picture is from the prompt. The Hakim found out that the king has cancer. Back in time, there was no cure for cancer, but the Hakim told the people to pray for their king because he believed that prayers and meditation are very important cures of every disease, beat cancer, and miraculously, the king was healing from the disease.