What does « Poetry / Hair » mean in the Quran?

A faction of the people of the Scripture wish they could mislead you. But they do not mislead except themselves, and they perceive [it] not.

O you who have believed, do not violate the rites of Allah or [the sanctity of] the sacred month or [neglect the marking of] the sacrificial animals and garlanding [them] or [violate the safety of] those coming to the Sacred House seeking bounty from their Lord and [His] approval. But when you come out of ihram, then [you may] hunt. And do not let the hatred of a people for having obstructed you from al-Masjid al-Haram lead you to transgress. And cooperate in righteousness and piety, but do not cooperate in sin and aggression. And fear Allah; indeed, Allah is severe in penalty.

And they prevent [others] from him and are [themselves] remote from him. And they do not destroy except themselves, but they perceive [it] not.

And they swear by Allah their strongest oaths that if a sign came to them, they would surely believe in it. Say, "The signs are only with Allah." And what will make you perceive that even if a sign came, they would not believe.

And thus We have placed within every city the greatest of its criminals to conspire therein. But they conspire not except against themselves, and they perceive [it] not.

Then We exchanged in place of the bad [condition], good, until they increased [and prospered] and said, "Our fathers [also] were touched with hardship and ease." So We seized them suddenly while they did not perceive.

So when they took him [out] and agreed to put him into the bottom of the well... But We inspired to him, "You will surely inform them [someday] about this affair of theirs while they do not perceive [your identity]."

Then do they feel secure that there will not come to them an overwhelming [aspect] of the punishment of Allah or that the Hour will not come upon them suddenly while they do not perceive?

They are, [in fact], dead, not alive, and they do not perceive when they will be resurrected.

Those before them had already plotted, but Allah came at their building from the foundations, so the roof fell upon them from above them, and the punishment came to them from where they did not perceive.

Then, do those who have planned evil deeds feel secure that Allah will not cause the earth to swallow them or that the punishment will not come upon them from where they do not perceive?

And Allah has made for you from your homes a place of rest and made for you from the hides of the animals tents which you find light on your day of travel and your day of encampment; and from their wool, fur and hair is furnishing and enjoyment for a time.

And similarly, We awakened them that they might question one another. Said a speaker from among them, "How long have you remained [here]?" They said, "We have remained a day or part of a day." They said, "Your Lord is most knowing of how long you remained. So send one of you with this silver coin of yours to the city and let him look to which is the best of food and bring you provision from it and let him be cautious. And let no one be aware of you.

But they say, "[The revelation is but] a mixture of false dreams; rather, he has invented it; rather, he is a poet. So let him bring us a sign just as the previous [messengers] were sent [with miracles]."

That [is so]. And whoever honors the symbols of Allah - indeed, it is from the piety of hearts.

And the camels and cattle We have appointed for you as among the symbols of Allah; for you therein is good. So mention the name of Allah upon them when lined up [for sacrifice]; and when they are [lifeless] on their sides, then eat from them and feed the needy and the beggar. Thus have We subjected them to you that you may be grateful.

Is [because] We hasten for them good things? Rather, they do not perceive.

Their account is only upon my Lord, if you [could] perceive.

And it will come to them suddenly while they perceive [it] not.

And the poets - [only] the deviators follow them;

Until, when they came upon the valley of the ants, an ant said, "O ants, enter your dwellings that you not be crushed by Solomon and his soldiers while they perceive not."

And they planned a plan, and We planned a plan, while they perceived not.

Say, "None in the heavens and earth knows the unseen except Allah, and they do not perceive when they will be resurrected."

And the wife of Pharaoh said, "[He will be] a comfort of the eye for me and for you. Do not kill him; perhaps he may benefit us, or we may adopt him as a son." And they perceived not.

And she said to his sister, "Follow him"; so she watched him from a distance while they perceived not.