Hadith 914
Ibn Mas`ud (May Allah be pleased with him) reported:
عن بن مسعود رضي الله عنه قال: دخلت علي النبي صلى الله عليه وسلمى الله عليه وسلم الله عليه وسلم الله عليه وسلم وهو يوعك، فمسسته، فقلت: إنك لتوعك وعكاً شديداً فقال: "إني أوعك كما يوعك رجلان منكم" ((متفق عليه))
I visited the Prophet ({ﷺ) while he was suffering. I said: "(O Messenger of Allah!) You suffer too much.'' He said, "Yes, I suffer as much as two men of you.'' [Al-Bukhari and Muslim].
In plain words
The Prophet acknowledged that his own suffering in illness was severe, teaching that admitting you are in real pain is not a weakness of faith.
Reference : Riyad as-Salihin 914 In-book reference : Book 6, Hadith 21