Surah Al-A'raf, Verse 142

۞ وَوَٰعَدۡنَا مُوسَىٰ ثَلَٰثِينَ لَيۡلَةٗ وَأَتۡمَمۡنَٰهَا بِعَشۡرٖ فَتَمَّ مِيقَٰتُ رَبِّهِۦٓ أَرۡبَعِينَ لَيۡلَةٗۚ وَقَالَ مُوسَىٰ لِأَخِيهِ هَٰرُونَ ٱخۡلُفۡنِي فِي قَوۡمِي وَأَصۡلِحۡ وَلَا تَتَّبِعۡ سَبِيلَ ٱلۡمُفۡسِدِينَ١٤٢

wawāʿadnā mūsā thalāthīna laylatan wa-atmamnāhā biʿashrin fatamma mīqātu rabbihi arbaʿīna laylatan waqāla mūsā li-akhīhi hārūna ukh'luf'nī fī qawmī wa-aṣliḥ walā tattabiʿ sabīla l-muf'sidīna

And We made an appointment with Moses for thirty nights and perfected them by [the addition of] ten; so the term of his Lord was completed as forty nights. And Moses said to his brother Aaron, "Take my place among my people, do right [by them], and do not follow the way of the corrupters."