Abdul Rahman b. Awf said – Allah’s Messenger (s.a.w.a.) informed: I am a tree and Ali (a.s.) and Fatima (s.a.) are its branches, Hasan (a.s.) and Husain (a.s.) are the fruits of this tree and those who love them from my nation are the leaves of this tree.

The branches of the tree grow from the root, and I swear to Allah, who sent me as a messenger, that this tree will be in everlasting blissful Paradise.
Bashaarah al-Mustafa Le Shiah al-Murtaza v 2 p 150