Islamic concepts

Amr أَمْر — command, initiative, authority

http://corpus.quran.com/qurandictionary.jsp?q=Amr#(18:82:28)

al-Khiḍr says ‘I didn't do it of my own command/initiative/authority.’ 18:82

enjoin: To direct or impose with authority and emphasis.

ʿamīr — commander

[Such believers are] the repentant, the worshippers, the praisers [of Allah], the travelers [for His cause], those who bow and prostrate [in prayer], those who enjoin what is right and forbid what is wrong, and those who observe the limits [set by] Allah. And give good tidings to the believers.