Sunan At-Tirmidhi

Asma' bint 'Umais narrated that the Messenger of Allah (S.A.W) asked her what they used as a laxative. She said:""Shubrum"" He said: ""It is hot and too strong."" She said:""Then I used Senna as a laxative."" So the Prophet (S.A.W) said: ""If there was anything that would have a cure for death in it, then it would have been Senna