Anas bin Malik (May Allah be pleased with him) reported:
Messenger of Allah ﷺ delivered a Khutbah to us the like of which I had never heard from him before. In the course of the Khutbah, he said: "If you knew what I know, you would laugh little and weep much". Thereupon those present covered their faces and began to sob.

[Al-Bukhari and Muslim].

وعن أنس، رضي الله عنه ، قال: خطب رسول الله، ﷺ، خطبة ما سمعت مثلها قط، فقال:
"لو تعلمون ما أعلم لضحكتم قليلاً ولبكيتم كثيراً" قال : فغطي أصحاب رسول الله ﷺ وجوههم، ولهم خنين ، ((متفق عليه)) ، وسبق بيان في باب الخوف.