Abu Qasim ﷺ said, "By the One in whose hand is Muhammad's soul, if you knew what I know, you would laugh little and weep much."
قال أبو القاسم ﷺ: والذي نفس محمد بيده لو تعلمون ما أعلم لضحكتم قليلا ولبكيتم كثيرا.
Bukhari narrated it in "Oaths and Vows" (6637) from Ibrahim bin Musa, Hisham (that is, Ibn Yusuf) informed us, from Mamar, from Hammam, from Abu Hurairah, and he mentioned it.