Imam Al-Nawawi’s Riyad-us-Saliheen
Dignity and Tranquility
Allah, the Exalted, says:
“And the (faithful) slaves of the Most Gracious (Allah) are those who walk on the earth in humility and sedateness, and when the foolish address them (with bad words) they reply back with mild words of gentleness.” (25:63)
703. `Aishah (May Allah be pleased with him) reported: I have never seen Messenger of Allah (sallallaahu alayhi wa sallam) laughing so heartily that his uvula could be seen. He used to smile only.
[Al-Bukhari and Muslim].