What does « Pact / Pledge » mean in the Quran?

And [mention] when We made the House a place of return for the people and [a place of] security. And take, [O believers], from the standing place of Abraham a place of prayer. And We charged Abraham and Ishmael, [saying], "Purify My House for those who perform Tawaf and those who are staying [there] for worship and those who bow and prostrate [in prayer]."

Righteousness is not that you turn your faces toward the east or the west, but [true] righteousness is [in] one who believes in Allah, the Last Day, the angels, the Book, and the prophets and gives wealth, in spite of love for it, to relatives, orphans, the needy, the traveler, those who ask [for help], and for freeing slaves; [and who] establishes prayer and gives zakah; [those who] fulfill their promise when they promise; and [those who] are patient in poverty and hardship and during battle. Those are the ones who have been true, and it is those who are the righteous.

But yes, whoever fulfills his commitment and fears Allah - then indeed, Allah loves those who fear Him.

Indeed, those who exchange the covenant of Allah and their [own] oaths for a small price will have no share in the Hereafter, and Allah will not speak to them or look at them on the Day of Resurrection, nor will He purify them; and they will have a painful punishment.

[They are] those who said, "Indeed, Allah has taken our promise not to believe any messenger until he brings us an offering which fire [from heaven] will consume." Say, "There have already come to you messengers before me with clear proofs and [even] that of which you speak. So why did you kill them, if you should be truthful?"

And do not approach the orphan's property except in a way that is best until he reaches maturity. And give full measure and weight in justice. We do not charge any soul except [with that within] its capacity. And when you testify, be just, even if [it concerns] a near relative. And the covenant of Allah fulfill. This has He instructed you that you may remember.

And We did not find for most of them any covenant; but indeed, We found most of them defiantly disobedient.

And when the punishment descended upon them, they said, "O Moses, invoke for us your Lord by what He has promised you. If you [can] remove the punishment from us, we will surely believe you, and we will send with you the Children of Israel."

The ones with whom you made a treaty but then they break their pledge every time, and they do not fear Allah.

[This is a declaration of] disassociation, from Allah and His Messenger, to those with whom you had made a treaty among the polytheists.

Excepted are those with whom you made a treaty among the polytheists and then they have not been deficient toward you in anything or supported anyone against you; so complete for them their treaty until their term [has ended]. Indeed, Allah loves the righteous [who fear Him].

How can there be for the polytheists a treaty in the sight of Allah and with His Messenger, except for those with whom you made a treaty at al-Masjid al-Haram? So as long as they are upright toward you, be upright toward them. Indeed, Allah loves the righteous [who fear Him].

And if they break their oaths after their treaty and defame your religion, then fight the leaders of disbelief, for indeed, there are no oaths [sacred] to them; [fight them that] they might cease.

And among them are those who made a covenant with Allah, [saying], "If He should give us from His bounty, we will surely spend in charity, and we will surely be among the righteous."

Indeed, Allah has purchased from the believers their lives and their properties [in exchange] for that they will have Paradise. They fight in the cause of Allah, so they kill and are killed. [It is] a true promise [binding] upon Him in the Torah and the Gospel and the Qur'an. And who is truer to his covenant than Allah? So rejoice in your transaction which you have contracted. And it is that which is the great attainment.

Those who fulfill the covenant of Allah and do not break the contract,

But those who break the covenant of Allah after contracting it and sever that which Allah has ordered to be joined and spread corruption on earth - for them is the curse, and they will have the worst home.

And fulfill the covenant of Allah when you have taken it, [O believers], and do not break oaths after their confirmation while you have made Allah, over you, a witness. Indeed, Allah knows what you do.

And do not exchange the covenant of Allah for a small price. Indeed, what is with Allah is best for you, if only you could know.

And do not approach the property of an orphan, except in the way that is best, until he reaches maturity. And fulfill [every] commitment. Indeed, the commitment is ever [that about which one will be] questioned.

Has he looked into the unseen, or has he taken from the Most Merciful a promise?

None will have [power of] intercession except he who had taken from the Most Merciful a covenant.

So Moses returned to his people, angry and grieved. He said, "O my people, did your Lord not make you a good promise? Then, was the time [of its fulfillment] too long for you, or did you wish that wrath from your Lord descend upon you, so you broke your promise [of obedience] to me?"

And We had already taken a promise from Adam before, but he forgot; and We found not in him determination.

And they who are to their trusts and their promises attentive