What if I made a vow (nadhr) and cannot fulfil it?

What decides it: is the inability permanent?

The scholars do not treat every difficulty the same way. The question is whether your inability is expected to pass or not.

• If the incapacity is permanent — old age, or an illness with no expected recovery — the obligation to perform the vow drops and the expiation of an oath becomes due. Ibn Baz put it plainly: once you are completely unable, the expiation of an oath is owed for the vow you could not fulfil.
• If the incapacity is temporary and expected to end — an illness you will recover from, a shortage of money you expect to resolve — you do not expiate yet. You wait until you are able, then fulfil the vow. Ibn Qudamah compares this to the sick person in Ramadan: the time has not been lost, so nothing is due yet.
• If it stays unresolved until it becomes permanent, it moves into the first category, and the expiation becomes due.

IslamWeb (fatwa 38621) applies exactly this reasoning to a man who vowed to give a gift and could not at the time: if his excuse is expected to pass, he waits; if he is unable entirely, he owes the expiation of an oath.

The expiation itself

The expiation of an oath is set out consistently across the sources:

1. Freeing a slave, or
2. Feeding ten poor people, or
3. Clothing ten poor people, or
4. Fasting three consecutive days if you cannot do any of the above.

Ibn Uthaymeen gives the same list — feeding ten poor people, clothing them, or freeing a slave, and if you find none of that, fasting three consecutive days.

When the vow was never a real vow

Not every vow creates the obligation in the first place. Ibn Uthaymeen explains that if the vow was really functioning as an oath — its purpose being to urge something, prevent something, confirm or deny something — then it does not bind you to the act itself, and the expiation of an oath is enough. His example: "If I do not speak to so-and-so, I owe Allah a vow to fast two months." If you then speak to him, you are not obliged to fast the two months; you may fast them or pay the expiation.

The same applies to a vow concerning something merely permitted, such as vowing to go out to prayer in a specific garment and then praying in another.

If the vow was to sin

A vow to disobey Allah is not valid and must not be fulfilled. Ibn Uthaymeen: if someone vows not to speak to his uncle, the vow is forbidden, he should speak to him, and he feeds ten poor people. The Prophet ﷺ said:

"Whoever vows to obey Allah, let him obey Him; and whoever vows to disobey Allah, let him not disobey Him."— Sahih al-Bukhari 6696

Al-Albani notes that the obligation of expiation in the case of a sinful vow is the position of Imam Ahmad, Ishaq, and the Hanafis, and that he considers it correct.

If you simply forgot the vow

Ibn Uthaymeen addresses this directly: if you made a vow and forgot it, nothing is binding on you until it becomes clear. If you despair of ever recalling it, you pay the expiation of an oath.

The warning against treating difficulty as an excuse

IslamWeb (fatwa 29377) is firm on one point: releasing yourself from a vow and expiating merely because you find it hard — with no genuine inability — is not permitted. It is described as taking lightly what Allah made obligatory and overstepping His limits. The concession is for real incapacity, not inconvenience.

Key takeaways

• Genuine, permanent inability removes the vow and obliges the expiation of an oath — ten poor people fed or clothed, a slave freed, or three consecutive days of fasting.
• Temporary difficulty does not remove the vow — you wait until you are able and then fulfil it.
• A vow that was really an oath (to urge, prevent, confirm or deny) does not bind the act itself; the expiation of an oath suffices.
• A vow to sin is never fulfilled — you abandon it and pay the expiation.
• If you forgot the vow entirely, nothing is due until it becomes clear; if you despair of recalling it, you expiate.

And Allah knows best.