"And the likeness of an evil word" is polytheism, "is as an evil tree," meaning: the colocynth, "uprooted from the surface of the earth," meaning: cut off from the top of the ground, "having no stability," meaning: its root has no firmness in the earth. Such is the parable of the disbeliever's deed; his good deed has no foundation.
﴿وَمثل كلمة خبيثة﴾ الشّرك ﴿كشجرة خبيثة﴾ يَعْنِي: الْحَنْظَلَةَ ﴿اجْتُثَّتْ مِنْ فَوْقِ الأَرْض﴾ أَيْ: قُطِعَتْ مِنْ أَعْلَى الأَرْضِ ﴿مَا لَهَا من قَرَار﴾ أَيْ: لَيْسَ لأَصْلِهَا ثباتٌ فِي الأَرْضِ؛ فَذَلِكَ مَثَلُ عَمَلِ الْكَافِرِ، لَيْسَ لِعَمَلِهِ الْحَسَنِ أصلٌ
