Musannaf Ibn Abi Shayba 29:231

Hussayn ibn Ali narrated to us, from Fudayl, from Hisham, who said: I said, "How many of the Companions of the Prophet (may Allah bless him and grant him peace) did al-Hasan meet?" He said, "One hundred and thirty." He said, "I said, 'How many did Ibn Sirin meet?'" He said, "Thirty."