Imam Ja‘far al-Ṣadiq (as): Imam al-Sadiq (AS) asked Yunus al-Shaybani, 'How much do you jest around with each other?' I said, 'Little.' He said, 'This is not how it should be, for playing is part of good character, and through that you bring happiness to your brother, and the Messenger of Allah (SAWA) would jest with people wanting to make them happy.' al-Kāfī