Seven oaths by the sun, moon, day, night, sky, earth and the soul lead to one point: every soul is given an inner sense of right and wrong. Success belongs to the one who purifies it; loss to the one who buries it.
Ash-Shams 91:1–10
Listen on Quran.comوَٱلشَّمْسِ وَضُحَىٰهَا
91:1I swear by the sun and his broad light,
وَٱلْقَمَرِ إِذَا تَلَىٰهَا
91:2and by the moon when she follows him,
وَٱلنَّهَارِ إِذَا جَلَّىٰهَا
91:3and by the day when it shows his brightness,
وَٱلَّيْلِ إِذَا يَغْشَىٰهَا
91:4and by the night when it envelops him,
وَٱلسَّمَآءِ وَمَا بَنَىٰهَا
91:5and by the sky, and the One who built it,
وَٱلْأَرْضِ وَمَا طَحَىٰهَا
91:6and by the earth, and the One who spread it,
وَنَفْسٍ وَمَا سَوَّىٰهَا
91:7and by the soul, and the One who made it well,
فَأَلْهَمَهَا فُجُورَهَا وَتَقْوَىٰهَا
91:8then inspired it with its (instincts of) evil and piety,
قَدْ أَفْلَحَ مَن زَكَّىٰهَا
91:9success is really attained by him who purifies it,
وَقَدْ خَابَ مَن دَسَّىٰهَا
91:10and failure is really suffered by him who pollutes it.
English translation: Mufti Muhammad Taqi Usmani, The Meanings of the Noble Qur'an, via Quran.com. Arabic: Uthmani script.
Where does your sense of right and wrong come from?