The Prophet, may the peace and blessings of Allah be upon him, is the best one to describe the cure, he diagnosed the ailment out of his wisdom and prescribed medicine. He is granted an insight from his Lord and a knowledge that he was not aware of.

Allah has gathered for him the categories of knowledge of the people's habits, customs, ethics, and their behaviors despite their different races environments, times, cultures and degrees in understanding. His Lord informed him about the news of the first and the last generations, and gave him the general rules under which everything fall of the requirements of people concerning both the religious and worldly matters. The Prophet, may the peace and blessings of Allah be upon him, was provided with a miraculous ability to know the ranks of men and their conditions whether in hardship or in prosperity in order to perform the function for which he was sent; to spread knowledge among the people, instilling virtues in their hearts after purifying them from vices, and taking them back to their Creator after the Devils moved them away from the straight path upon which were the Prophets, the Messengers, the truthful and the righteous. 

This Hadith is a wise wisdom in which the souls of the believers find rest and the consolation in each calamity, as well one can really estimate the graces he has bestowed no matter how small are they in the eyes of people.