﴿ يَوْمَئِذٍۢ يُوَفِّيهِمُ ٱللَّهُ دِينَهُمُ ٱلْحَقَّ وَيَعْلَمُونَ أَنَّ ٱللَّهَ هُوَ ٱلْحَقُّ ٱلْمُبِينُ ﴾

“On that day God will pay them in full their just due, and they will come to know that God alone is the Ultimate Truth, manifest, and manifesting [the true nature of all that has ever been done].”

(On that day) the Day of Judgement (Allah will pay them their just due) he will fairly requite them for their works, (and they will know that Allah, He is the Manifest Truth) they will know that what Allah said in the life of this world is true.