Abdullah bin Ma'ql عبد الله بن معقل المحاربي · Chapters on Medicine

“The Messenger of Allah (ﷺ) said to me: ‘What do you use as a laxative?’ I said: ‘The Shubrum (spurge – Euphorb).’ He said: (It is) hot and powerful.’ Then I used senna as a laxative and he said: ‘If anything were to cure death, it would be senna. Senna is a cure for death.’”