إِنَّ الصِّدْقَ بِرٌّ، وَإِنَّ الْبِرَّ يَهْدِي إِلَى الْجَنَّةِ
Truthfulness is goodness, and goodness leads to Paradise.
Source: مسلم
الصِّدْقَ means truthfulness; بِرٌّ broad goodness and righteousness; يَهْدِي means “guides” or “leads.” Truth is presented as a path to other good deeds, not merely an isolated virtue.
إِنَّ expresses emphasis. الصِّدْقَ is its accusative noun, and بِرٌّ its predicate. يَهْدِي is a present-tense verb expressing the action of leading or guiding.
In practice, a truthful person describes events faithfully, handles entrusted matters reliably, and does not use a lie to conceal a mistake.