In a dream, for scholars and the righteous, it indicates devoting oneself to obeying God the Exalted and His Messenger. Cheerfulness for others, such as jesters, mockers or corrupters, is a sign of heedlessness, inclination toward what is forbidden and its people, and associating with the people of innovation.
Dream meaning · al-Nabulsi
Cheerfulness (a smiling face) بشاشة
Source: al-Nabulsi, Ta'tir al-Anam fi Ta'bir al-Manam, p. 40. English translation by iDreamBot. Quran verses: Quran.com, Saheeh International.