Musannaf Ibn Abi Shayba 3:5950

Humaid ibn Abd al-Rahman narrated to us, from Hasan, from Abdullah ibn Isa, who said: Abd al-Rahman ibn Abi Layla led us in prayer when the moon eclipsed, like this prayer of ours in Ramadan. He said: And the first thing he recited was: "Ya-Sin. By the Wise Qur'an."