7. Al-Araf (The Heights)

Surah: 7   Aya: 142

142. WawaAAadna moosa thalatheena laylatan waatmamnaha biAAashrin fatamma meeqatu rabbihi arbaAAeena laylatan waqala moosa li-akheehi haroona okhlufnee fee qawmee waaslih wala tattabiAA sabeela almufsideena
  

  Translation

142. And We appointed for Mûsa (Moses) thirty nights and added (to the period) ten (more), and he completed the term, appointed by his Lord, of forty nights. And Mûsa (Moses) said to his brother Hârûn (Aaron): "Replace me among my people, act in the Right Way (by ordering the people to obey Allâh and to worship Him Alone) and follow not the way of the Mufsidûn (mischief-makers)."