The word(s) "act" appears 82 time(s) in 70 verse(s) in Quran in Muhammad Pickthal translation.

(41) And when We exacted a covenant from the prophets, and from thee (O Muhammad) and from Noah and Abraham and Moses and Jesus son of Mary. We took from them a solemn covenant;

(42) Lo! the devil is an enemy for you, so treat him as an enemy. He only summoneth his faction to be owners of the flaming Fire.

(43) Say: Have ye seen your partner-gods to whom ye pray beside Allah? Show me what they created of the earth! Or have they any portion in the heavens? Or have We given them a scripture so they act on clear proof therefrom? Nay, the evil-doers promise one another only to deceive.

(44) And they swore by Allah, their most binding oath, that if a warner came unto them they would be more tractable than any of the nations; yet, when a warner came unto them it aroused in them naught save repugnance,

(45) And he hath coined for Us a similitude, and hath forgotten the fact of his creation, saying: Who will revive these bones when they have rotted away?

(46) A defeated host are (all) the factions that are there.

(47) And (the tribe of) Thamud, and the folk of Lot, and the dwellers in the wood: these were the factions.

(48) Say: O my people! act in your manner. Lo! I (too) am acting. Thus ye will come to know

(49) The folk of Noah and the factions after them denied (their messengers) before these, and every nation purposed to seize their messenger and argued falsely, (thinking) thereby to refute the Truth. Then I seized them, and how (awful) was My punishment.

(50) And he who believed said: O my people! Lo! I fear for you a fate like that of the factions (of old);