That is because those who disbelieve follow falsehood, and those who believe (47:3)

﴿ذَٰلِكَ بِأَنَّ الَّذِينَ كَفَرُوا اتَّبَعُوا الْبَاطِلَ وَأَنَّ الَّذِينَ آمَنُوا اتَّبَعُوا الْحَقَّ مِن رَّبِّهِمْ ۚ كَذَٰلِكَ يَضْرِبُ اللَّهُ لِلنَّاسِ أَمْثَالَهُمْ﴾
[ محمد: 3]

47:3 That is because those who disbelieve follow falsehood, and those who believe follow the truth from their Lord. Thus does Allah present to the people their comparisons.

That mentioned recompense for the two groups is because those who reject Allah followed falsehood, and those who have faith in Allah and His Messenger followed the truth from their Lord.
Thus, their recompense differs just as their efforts differed.
Just as Allah showed His decision about the two groups, the group of the believers and the group of the disbelievers, Allah gives people their examples, so that similar things are linked.

That is because those who disbelieve follow falsehood, while those who believe follow the truth from their Lord. Thus does Allah set forth their parables for mankind.

phonetic Transliteration

Thalika bianna allatheena kafaroo ittabaAAoo albatila waanna allatheena amanoo ittabaAAoo alhaqqa min rabbihim kathalika yadribu Allahu lilnnasi amthalahum

Abdullah Yusuf Ali - Translation

This because those who reject Allah follow vanities, while those who believe follow the Truth from their Lord: Thus does Allah set forth for men their lessons by similitudes.

Safi-ur-Rahman al-Mubarakpuri

That is because those who disbelieve follow falsehood, while those who believe follow the truth from their Lord. Thus does Allah set forth for mankind their parables.

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