وَوٰعَدْنَا مُوْسٰي ثَلٰثِيْنَ لَيْلَۃً وَّاَتْمَمْنٰہَا بِعَشْرٍ فَتَمَّ مِيْقَاتُ رَبِّہٖۗ اَرْبَعِيْنَ لَيْلَۃً۰ۚ وَقَالَ مُوْسٰي لِاَخِيْہِ ہٰرُوْنَ اخْلُفْنِيْ فِيْ قَوْمِيْ وَاَصْلِحْ وَلَا تَتَّبِعْ سَبِيْلَ الْمُفْسِدِيْنَ۱۴۲
WawaAAadna moosa thalatheena laylatan waatmamnaha biAAashrin fatamma meeqatu rabbihi arbaAAeena laylatan waqala moosa liakheehi haroona okhlufnee fee qawmee waaslih wala tattabiAA sabeela almufsideena
We made an appointment of thirty nights with Moses (On Mount Sinai) to which We added ten more; so the term set by the Lord was completed in forty nights. Moses said to Aaron, his brother: "Deputise for me among my people. Dispose rightly, and do not follow the way of the authors of evil."