تفسير : this is the reason why allah swore: (lo! this (qur'an) is a conclusive word) a true exposition; it is also said this means: it is a judgement from allah,
Jalāl al-Dīn al-Maḥallī
تفسير : assuredly it, the qur’ān, is a decisive word, distinguishing between truth and falsehood,