Ibn 'Abbas narrated that the Messenger of Allah (s.a.w) said:
"Indeed the best of what you treat is As-Sa'ut, Al-Ladud, cupping and laxatives.' So when the Messenger of Allah (S.A.W) was suffering his companions treated him with Al-Ladud, and when they were finished he said: 'Treat them with Al-Ladud.' So all of them except Al-Abbas were treated with Al-Ladud."(Daif)
English reference: Vol. 4, Book 2, Hadith 2047
Arabic reference: Book 28, Hadith 2184