And believes in the best [reward], (92:6)

Almuntakhab Fi Tafsir Alquran Alkarim

And solemnly believes in deeds imprinted with wisdom and piety and that the end crowns the deed

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(92:6) and affirmed the Truth of goodness: *2

And believes in the best [reward], meaning

*2) This is the first kind of endeavours, which includes three things, and a little consideration shows that they comprehend all virtues:
(1) That Tnan should refrain from wealth-worship, but should spend whatever Allah has given him generously in rendering Allah's and His servants' rights, for good works and for helping others;
(2) that he should fear God and refrain from things which cause His displeasure in his moral, social, economic and other dealings with the people;
(3) that he should believe in goodness. Goodness is a comprehensive word, which includes goodness of belief, morals and acts. Goodness of belief means that one should give up polytheism; atheism, and disbelief, and affirm faith in Tauhid, . the . Hereafter and Prophethood. Affirming belief in goodness of morals and acts is that one should not be doing good and right merely unconsciously, outside a definite system, but one should acknowledge as right and sound the system of goodness which God has sent, which combines every kind of goodness in all its forms and aspects into a system comprehensively called the Divine Shari'ah.
 

And believes in the best [reward], meaning in Urdu

اور بھلائی کو سچ مانا