The reason for the narration: “Patience is only at the first shock”

Question:
Honorable Shaykh, may Allah grant you success. This questioner says: Regarding the saying of the Prophet (peace and blessings be upon him) to the woman , he asks: What is the intended meaning of that, may Allah grant you success?

Answer:
The Prophet (peace and blessings be upon him) passed by a woman weeping at the grave of her son, and he said, “O woman of Allah, be patient.” She said, “Leave me alone; I did not know that you were the Messenger (peace and blessings be upon him). Leave me alone, meaning let me be, for you have not been struck by a calamity like mine.” When the Messenger (peace and blessings be upon him) turned away and left her, they said, “This is the Messenger (peace and blessings be upon him).” So she went to him and apologized to him, saying, “O Messenger of Allah, now I am patient.” He said, “Patience is only at the first shock.”