The word(s) "authority" appears 38 time(s) in 38 verse(s) in Quran in Mohsin Khan translation.

(11) Thus did We give full authority to Yusuf (Joseph) in the land, to take possession therein, when or where he likes. We bestow of Our Mercy on whom We will, and We make not to be lost the reward of Al-Muhsinun (the good doers - See V.2:112).

(12) And thus have We sent it (the Qur'an) down to be a judgement of authority in Arabic. Were you (O Muhammad صلى الله عليه و سلم) to follow their (vain) desires after the knowledge which has come to you, then you will not have any Wali (protector) or Waq (defender) against Allah.

(13) Their Messengers said: "What! Can there be a doubt about Allah, the Creator of the heavens and the earth? He calls you (to Monotheism and to be obedient to Allah) that He may forgive you of your sins and give you respite for a term appointed." They said: "You are no more than human beings like us! You wish to turn us away from what our fathers used to worship. Then bring us a clear authority (i.e. a clear proof of what you say)."

(14) Their Messengers said to them: "We are no more than human beings like you, but Allah bestows His Grace to whom He wills of His slaves. It is not ours to bring you an authority (proof) except by the Permission of Allah. And in Allah (Alone) let the believers put their trust.

(15) And Shaitan (Satan) will say when the matter has been decided: "Verily, Allah promised you a promise of truth. And I too promised you, but I betrayed you. I had no authority over you except that I called you, and you responded to me. So blame me not, but blame yourselves. I cannot help you, nor can you help me. I deny your former act in associating me (Satan) as a partner with Allah (by obeying me in the life of the world). Verily, there is a painful torment for the Zalimun (polytheists and wrong-doers)."

(16) "Certainly, you shall have no authority over My slaves, except those who follow you of the Ghawun (Mushrikun and those who go astray, criminals, polytheists, and evil-doers).

(17) And do not kill anyone whose killing Allah has forbidden, except for a just cause. And whoever is killed wrongfully (Mazluman intentionally with hostility and oppression and not by mistake), We have given his heir the authority [to demand Qisas, - Law of Equality in punishment - or to forgive, or to take Diyah (blood money)]. But let him not exceed limits in the matter of taking life (i.e he should not kill except the killer). Verily, he is helped (by the Islamic law).

(18) "Verily, My slaves (i.e. the true believers of Islamic Monotheism) - you have no authority over them. And All-Sufficient is your Lord as a Guardian."

(19) And say (O Muhammad صلى الله عليه و سلم): My Lord! Let my entry (to the city of Al-Madinah) be good, and (likewise) my exit (from the city of Makkah) be good. And grant me from You an authority to help me (or a firm sign or a proof).

(20) "These our people have taken for worship alihah (gods) other than Him (Allah). Why do they not bring for them a clear authority? And who does more wrong than he who invents a lie against Allah.