مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2406
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated from Ibn 'Abbas (رضي الله عنه) that a woman brought a son of hers to the Messenger of Allah (ﷺ) and said: This son of mine is possessed; it affects him at our lunch and dinner and spoils our meals. The Messenger of Allah (ﷺ) wiped his chest and prayed for him, and he coughed, then something like a little black dog came out of his mouth.
Musnad Ahmad 2418lts isnad is da'eef because Farqad as-Sabakhi is da'eef]