Tafsir of Ibraheem 14:26

ومثل كلمة خبيثة كشجرة خبيثة

And the parable of an evil word is that of an evil tree, describing the disbelief of the disbeliever, for it has no basis or stability. It is similar to the colocynth tree (a very bitter, unscented plant) which is also called, `Ash-Shiryan'. Shu`bah narrated that Mu`awiyah bin Abi Qurrah narrated that Anas bin Malik said that; it is the colocynth tree. Allah said,

اجتثت

uprooted, meaning, was cutoff from the root,

من فوق اﻻرض ما لها من قرار

from the surface of earth, having no stability. therefore, existing without basis or stability, just like Kufr (disbelief), for it does not have a basis or roots. Surely, the works of the disbelievers will never ascend nor will any of them be accepted