Simak (may Allah have mercy on him) says: I said to Sayyiduna Jabir bin Samurah (may Allah be pleased with him): Did you use to sit with the Prophet (peace and blessings be upon him)? He said: Yes. He (peace and blessings be upon him) used to remain silent for long and laughed little. His (peace and blessings be upon him) Companions would recite poetry, and he (peace and blessings be upon him) would smile.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21118