And (so that you would be favored with the Torah to order your affairs) We appointed with Moses thirty nights, to which We added ten, so he completed the term of forty nights set by His Lord (for him to spend in devotion). (Before leaving his people in order to come to Our Presence) Moses had said to his brother (Aaron): "Take my place among my people (act to reform them and set things right), and do not follow the way of those who provoke disorder and corruption."