Waki' bin Hudus narrated that his paternal uncle Abu Razin said:
"The Messenger of Allah said: 'Allah laughs at the despair of His slaves although He soon changes it.' I said: 'O Messenger of Allah, does the Lord laugh?' He said: 'Yes.' I said: 'We shall never be deprived of good by a Lord Who laughs.'" (PT)
English reference (PT): Vol. 1, Book 1, Hadith 181 (PT)
Arabic reference (PT): Book 1, Hadith 186 (PT)