The Long Āgama Sūtra 8.16

8.16

時，五百梵志弟子各各舉聲，自相謂言：「瞿曇沙門有大威勢，有大神力，他問己義，乃開他義。」

The wanderer’s 500 disciples all raised their voices, telling each other, “The ascetic Gautama possesses great might and great power! When someone asks about his doctrine, he instead discusses their doctrine!”