Sayyiduna Jabir (may Allah be pleased with him) said: The Prophet (peace and blessings be upon him) used to remain silent a great deal; the Companions would talk about matters of the Days of Ignorance and laugh, and he (peace and blessings be upon him) would smile along with them.
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1986