It was narrated from Ibn 'Abbas (رضي الله عنه) that

A woman brought her child to the Messenger of Allah (ﷺ) and said: O Messenger of Allah, he is possessed; it affects him when we are eating and spoils our meals. The Messenger of Allah (ﷺ) wiped his chest and prayed for him, and he vomited, then something like a little black dog came out of his mouth, and he recovered.