Since Al has come ahead of the word Uqood and as according...
Since Al has come ahead of the word Uqood and as according to grammar it denotes a common category and from one angle the sentence is fully unconditional it can be derived that this Holy verse includes all sorts of promises and covenants which must be fulfilled those between men and man's promise to God and so also all the political, trade, family etc treaties or understandings.
And the Quran in another ayat says: and fulfil the promise; surely every promise shall be questioned about Amirul Mo-mineen (a.s.) writes in his letter to Malik Ashtar: From among the divine commandments, there is no subject like the keeping of promise, which is most unanimously agreed, despite other disagreements. Therefore even the idol worshippers of the days of ignorance were respecting the oath among them since they had understood the harms of oath breaking.
The Holy Prophet (s.a.w.s.) said: One who does not keep his promise has no religion. Similarly there is another narration from Imam Ali (a.s.): Almighty Allah does not accept anything from His slaves except a good deed and nothing except the fulfilment of oath is acceptable in His court. And there is another narration from Salman Farsi that also has the same meaning: The destruction of this community will be caused by their breach of promises.
The Holy constitution of Islam had given importance to oath keeping to such an extent that even if a common soldier gives protection to a man or group of the enemy it is incumbent upon all Muslims to keep that promise. A group of Islamic scholars is of the opinion that one of the matters which attracted the idol worshippers and polytheist to Islam in its earlier period was the same fulfilling of covenants and keeping oaths.
In this connection, Hisham bin Saalim quotes Imam Sadiq (a.s.): The promise of a Muslim to another Muslim is a vow for which there is no expiation it means if he breaks it, it cannot be compensated and, really, it is considered as a promise given to God. So the Holy Quran says: O group of the faithful! Why do you not do as you say? Be afraid of this deed of not doing what is said as it will cause a great Divine anger.
In traditions, keeping of oaths and promise is considered as one of the signs of faith, like faith in God and the Hereafter. Hence the Holy Prophet (s.a.w.s.) says: Whoever has faith in Allah and the Day of Judgement must keep the promise whenever he makes it.