All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
It is proven in authentic Ahadeeth that laughing is one of the Attributes of Allah; He laughs in a manner that befits His Majesty and Greatness.
Abu Hurayrah narrated that the Prophet said: “Allah laughs at two men, one of whom killed the other but they both enter Paradise.” [Al-Bukhari and Muslim]
Ibn Khuzaymah, who is known as the leader of all the Imams, mentioned this Hadeeth in Kitaab At-Tawheed (the Book of Tawheed) under chapter: ‘Stating the confirmation that our Lord, Almighty, laughs: “Without describing how He laughs, and His laughing does not resemble to the laughing of the creation, and vise-versa.”
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Allah knows best.