Musnad Ahmad 25:295

Yazid narrated to us, Hammad ibn Salamah informed us, from Farqad al-Sabakhi, from Sa'id ibn Jubayr, from Ibn Abbas: That a woman brought her child to the Messenger of Allah, may Allah bless him and grant him peace, and said: "O Messenger of Allah, he is afflicted with madness (lamam), and it seizes him during our meal, so he ruins our food for us." He said: "The Messenger of Allah, may Allah bless him and grant him peace, wiped his chest and prayed for him. He then vomited a vomit, and there came out of his mouth something like a black puppy, and he was healed."