Both the similes are perfect and clear because the true...
Both the similes are perfect and clear because the true words and the right beliefs are like the tree whose roots are firm and strong and during times of doubt and unclarity they do not move from their place and their branches reach to the sky and it becomes taller and taller and those words and true belief are accepted in the realm of Allah and everyday due to correct belief and good deeds Allah’s grace is showered upon him.
That tree bears fruits and immediately bears pure fruits in the world and due to belief and good deeds in abundance and due to good ethics it acquires nearness to the Almighty. The wrong-doers try their best to uproot it and destroy it but they cannot do so and in the hereafter that tree will bear the fruits of everlasting benefits and never-ending pleasures and the false words and wrong beliefs are like cactus for the intelligence, which is bitter in taste and unbearable.
Although misguided and ignorant people try to spread it, but it gets uprooted from the ground as it does not have firmness and in the hereafter its fruits would be destruction and annihilation. In Hell there would be nothing to eat and drink except cactus, blood and pus.
Of the explanations of these verses by Shias and Sunnis there is a traditions of Ibne Abbas from Ahle Sunnat sources that Jibraeel said to the Holy Prophet (S): You are that tree, and Ali is its branches and Hasan and Husain (a.s.) are its fruits.
In Firdausul Akbhar there is a tradition from the Holy Prophet (S) that: I am the tree and Fatima is its branch and due to Ali and Fatima it has the capability of bearing fruits and Hasan and Husain are its fruits and the friends of Ahlul Bayt (a.s.) are its leaves and all its parts are in Paradise.
Kulaini, Saffar and Ibne Babawayh have narrated from Imam Sadiq (a.s.) that the Holy Prophet (S) said: I am the base and the root of that tree and Amirul Momineen (a.s.) is its trunk and the Imams from his progeny are its stems, and the knowledge of the Imams are its fruits and the believers are its leaves. Is there anything else in a tree? No, by Allah, said the narrator.
The Hazrat said: By Allah when a believer is born a leaf grows from that tree and when a believer dies, a leaf falls off the tree. In Maniul Akhbar there is a tradition from Imam Muhammad Baqir (a.s.) that the tree is the Holy Prophet (S), its trunk is Amirul Momineen (a.s.), its branch is Fatima (s.a.) and its fruits are their sons and its leaves are our Shias.