The short answer
Keeping your word is a trait of believers and prophets, and Allah says every commitment will be asked about. Habitually breaking promises is one of the signs of a hypocrite. If you truly cannot keep a promise, explain honestly and make amends; saying "inshallah" is a sincere reliance on Allah, not a loophole.
Allah commands, "fulfill [every] commitment. Indeed, the commitment is ever [that about which one will be] questioned" 1, and "O you who have believed, fulfill [all] contracts" 2. Among the qualities of successful believers are that they are "to their trusts and their promises attentive" 3.
Saying without doing. "O you who have believed, why do you say what you do not do? Great is hatred in the sight of Allah that you say what you do not do" 4. Empty promises are not a small matter.
A sign of hypocrisy. The Prophet ﷺ said the signs of a hypocrite are three: when he speaks he lies, "Whenever he promises, he always breaks it", and when trusted he betrays 5.
The prophets' example. Allah honours Isma'il (AS): "he was true to his promise" 6. The Prophet ﷺ honoured a promise made even to enemies. When Hudhayfah and his father were captured and released by Quraysh on the promise that they would not fight alongside him, he told them to go on to Madinah, saying, "we will fulfil the covenant made with them" 7, even on the eve of Badr.
Say "inshallah" sincerely. Allah teaches us never to say we will do something tomorrow without adding "if Allah wills" 8. This is honest humility: you intend to do it, and you know the outcome is in Allah's hands. Using "inshallah" as a polite way of saying no, while never intending to follow through, is closer to the hypocrite's habit than to the Sunnah.
In practice: promise less and deliver more. If circumstances genuinely stop you, tell the person early, apologise, and offer an alternative.
Fulfill every commitment; you will be questioned about it.
وَلَا تَقۡرَبُواْ مَالَ ٱلۡيَتِيمِ إِلَّا بِٱلَّتِي هِيَ أَحۡسَنُ حَتَّىٰ يَبۡلُغَ أَشُدَّهُۥۚ وَأَوۡفُواْ بِٱلۡعَهۡدِۖ إِنَّ ٱلۡعَهۡدَ كَانَ مَسۡـُٔولࣰ ا ٣٤
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
Believers are commanded to fulfil their contracts.
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوٓاْ أَوۡفُواْ بِٱلۡعُقُودِۚ أُحِلَّتۡ لَكُم بَهِيمَةُ ٱلۡأَنۡعَٰمِ إِلَّا مَا يُتۡلَىٰ عَلَيۡكُمۡ غَيۡرَ مُحِلِّي ٱلصَّيۡدِ وَأَنتُمۡ حُرُمٌۗ إِنَّ ٱللَّهَ يَحۡكُمُ مَا يُرِيدُ ١
O you who have believed, fulfill [all] contracts. Lawful for you are the animals of grazing livestock except for that which is recited to you [in this Qur'an] - hunting not being permitted while you are in the state of ihram. Indeed, Allah ordains what He intends
Successful believers are attentive to their trusts and promises.
وَٱلَّذِينَ هُمۡ لِأَمَٰنَٰتِهِمۡ وَعَهۡدِهِمۡ رَٰعُونَ ٨
And they who are to their trusts and their promises attentive
It is greatly hateful to Allah that you say what you do not do.
يَٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُواْ لِمَ تَقُولُونَ مَا لَا تَفۡعَلُونَ ٢ كَبُرَ مَقۡتًا عِندَ ٱللَّهِ أَن تَقُولُواْ مَا لَا تَفۡعَلُونَ ٣
2 O you who have believed, why do you say what you do not do 3 Great is hatred in the sight of Allah that you say what you do not do
The signs of a hypocrite include breaking promises.
Narrated Abu Huraira: The Prophet (ﷺ) said, "The signs of a hypocrite are three: 1. Whenever he speaks, he tells a lie. 2. Whenever he promises, he always breaks it (his promise ). 3. If you trust him, he proves to be dishonest. (If you keep something as a trust with him, he will not return it)
حَدَّثَنَا سُلَيْمَانُ أَبُو الرَّبِيعِ، قَالَ حَدَّثَنَا إِسْمَاعِيلُ بْنُ جَعْفَرٍ، قَالَ حَدَّثَنَا نَافِعُ بْنُ مَالِكِ بْنِ أَبِي عَامِرٍ أَبُو سُهَيْلٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " آيَةُ الْمُنَافِقِ ثَلاَثٌ إِذَا حَدَّثَ كَذَبَ، وَإِذَا وَعَدَ أَخْلَفَ، وَإِذَا اؤْتُمِنَ خَانَ ".
Isma'il (AS) was true to his promise.
وَٱذۡكُرۡ فِي ٱلۡكِتَٰبِ إِسۡمَٰعِيلَۚ إِنَّهُۥ كَانَ صَادِقَ ٱلۡوَعۡدِ وَكَانَ رَسُولࣰ ا نَّبِيࣰّ ا ٥٤
And mention in the Book, Ishmael. Indeed, he was true to his promise, and he was a messenger and a prophet
The Prophet ﷺ honoured a covenant Hudhayfah and his father made with Quraysh, even before Badr.
It has been reported on the authority of Hudbaifa b. al-Yaman who said:Nothing prevented me from being present at! he Battle of Badr except this incident. I came out with my father Husail (to participate in the Battle), but we were caught by the disbelievers of Quraish. They said: (Do) you intend to go to Muhammad? We said: We do not intend to go to him, but we wish to go (back) to Medina. So they took from us a covenant in the name of God that we would turn back to Medina and would not fight on the side of Muhammad (ﷺ). So, we came to the Messenger of Allah (ﷺ) and related the incident to him. He said: Both, of you proceed (to Medina) ; we will fulfil the covenant made with them and seek God's help against them
وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو أُسَامَةَ، عَنِ الْوَلِيدِ بْنِ جُمَيْعٍ، حَدَّثَنَا أَبُو الطُّفَيْلِ حَدَّثَنَا حُذَيْفَةُ بْنُ الْيَمَانِ، قَالَ مَا مَنَعَنِي أَنْ أَشْهَدَ، بَدْرًا إِلاَّ أَنِّي خَرَجْتُ أَنَا وَأَبِي - حُسَيْلٌ - قَالَ فَأَخَذَنَا كُفَّارُ قُرَيْشٍ قَالُوا إِنَّكُمْ تُرِيدُونَ مُحَمَّدًا فَقُلْنَا مَا نُرِيدُهُ مَا نُرِيدُ إِلاَّ الْمَدِينَةَ . فَأَخَذُوا مِنَّا عَهْدَ اللَّهِ وَمِيثَاقَهُ لَنَنْصَرِفَنَّ إِلَى الْمَدِينَةِ وَلاَ نُقَاتِلُ مَعَهُ فَأَتَيْنَا رَسُولَ اللَّهِ صلى الله عليه وسلم فَأَخْبَرْنَاهُ الْخَبَرَ فَقَالَ " انْصَرِفَا نَفِي لَهُمْ بِعَهْدِهِمْ وَنَسْتَعِينُ اللَّهَ عَلَيْهِمْ " .
Never say you will do something tomorrow without adding "if Allah wills".
وَلَا تَقُولَنَّ لِشَاْيۡءٍ إِنِّي فَاعِلࣱ ذَٰلِكَ غَدًا ٢٣ إِلَّآ أَن يَشَآءَ ٱللَّهُۚ وَٱذۡكُر رَّبَّكَ إِذَا نَسِيتَ وَقُلۡ عَسَىٰٓ أَن يَهۡدِيَنِ رَبِّي لِأَقۡرَبَ مِنۡ هَٰذَا رَشَدࣰ ا ٢٤
23 And never say of anything, "Indeed, I will do that tomorrow 24 Except [when adding], "If Allah wills." And remember your Lord when you forget [it] and say, "Perhaps my Lord will guide me to what is nearer than this to right conduct
This answer was compiled with the help of AI, using only the verified texts shown here. Every reference links to its source. If you find a mistake, please report it. Updated 2026-09-24