Some monks in the Eastern monastery on the ground floor of the Migārāmatupāsāda were puffed-up and vain, rough and rambling in speech, muddle-headed, and heedless. The Buddha told Mahā-Moggallāna to go and stir them up. He used his psychic powers to make the palace shake and the monks were alarmed. The Buddha then praised Moggallāna as in the sutta below. S.v.269.