It was narrated that Asma’ bint ‘Umais said:“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.’”

English translation · Sunan Ibn Majah