Abu Hurairah (radiyallaahu-anhu) said: They (i.e. the people) said: “O Messenger of Allaah! You joke with us?” He (sallal-laahu-alayhi-wasallam) said: Indeed, I do not utter, except truth.” [1]

Ibn Umar (radiyallaahu-anhu) was asked: ”Did the companions of the Prophet (sallal-laahu-alayhi-wasallam) used to laugh?” He said:Yes, and the Imaan in their hearts was greater than the mountains.”[2]

—————————————————————————————-

[1] Reported by Imaam Tirmidhee (rahimahullaah). Number 1990 and declared saheeh by Imaam Albaani (rahimahullaah)

[2] Hilyatul Awliyaa (1/385)