A Righteous Believer shall earn his Reward in full

Quran 21:94:

So whoever does righteous deeds while he is a believer – no denial will there be for his effort, and indeed We, of it, are recorders.

The following excerpt is taken from “Tafsir Ibn Kathir” under the commentary of the above verse:

So whoever does righteous good deeds while he is a believer,

meaning, his heart believes and his deeds are righteous.

his efforts will not be rejected. This is like the Ayah:

certainly We shall not make the reward of anyone who does his deeds in the most perfect manner to be lost. (18:30)

which means, his efforts will not be wasted; they will be appreciated and not even a speck of dust’s weight of injustice will be done.

Allah says:

Verily, We record it for him.
means, all his deeds are recorded and nothing of them at all is lost.

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