Here is the widely taught dua for closing / breaking the fast (iftar) , with a brief explanation and context.

Main dua for breaking (closing) the fast

The wording most commonly recommended by many contemporary scholars is:

اللَّهُمَّ لَكَ صُمْتُ، وَعَلَى رِزْقِكَ أَفْطَرْتُ
Allahumma laka sumtu wa ‘ala rizqika aftartu
“O Allah, for You I have fasted and with Your provision I break my fast.”

Many Islamic sites and fatwa resources list this as a valid dua to say when you close your fast at iftar time.

However, scholars of hadith note that the specific narration of this wording is weak (da‘if) in terms of chain of transmission.

Despite that, because the meaning is sound and it is a general supplication (not a fixed pillar of worship like tashahhud), many scholars allow saying it, while reminding that it is not an authentically established sunnah formula like the one below.

Strongly authentic dua at the moment of breaking the fast

A hadith from the Prophet ﷺ, reported from ‘Umar ibn al-Khattab, mentions this dua:

ذَهَبَ الظَّمَأُ، وَابْتَلَّتِ الْعُرُوقُ، وَثَبَتَ الأَجْرُ إِنْ شَاءَ اللَّهُ
Dhahaba al-zama’ wabtallati al-‘urooq wa thabata al-ajru in shā’ Allāh
“The thirst is gone, the veins are moistened, and the reward is confirmed, if Allah wills.”

Islamic juristic Q&A sites mention that this hadith has a sound (sahih) chain , and that the Prophet ﷺ used to say this when breaking his fast.

So, if you want the most authentic dua at the moment of closing the fast (iftar) , this is the one emphasized as being directly reported from the Prophet ﷺ.

Simple way to practice it daily

At iftar time, you can combine between:

  1. Making your own personal dua from the heart in any language.
    Scholars note that the dua of the fasting person at the time of breaking fast is strongly hoped for acceptance.
  1. Reciting one or both of these:
    • Dhahaba al-zama’ wabtallati al-‘urooq wa thabata al-ajru in shā’ Allāh (most authentic).
 * **Allahumma laka sumtu wa ‘ala rizqika aftartu** (meaning is good, but hadith is weak, so treat it as a general permissible dua, not a strictly “sunnah wording”).

An easy routine could be:

Say “Bismillah,” break your fast with a date or water, then recite:
Dhahaba al-zama’ wabtallati al-‘urooq wa thabata al-ajru in shā’ Allāh ,
followed by any personal dua you need in your life (for forgiveness, guidance, success, family, etc.).

Mini FAQ: Common doubts

1. Is it compulsory to say a specific dua to close the fast?
No specific wording is obligatory ; fasting is valid without any particular dua. The duas above are recommended remembrances, not conditions of validity.

2. Can I say the dua in English or my own language?
Yes. Dua is, at its core, calling upon Allah, and scholars regularly permit making dua in one’s own language, especially for personal needs.

3. Is “Allahumma inni laka sumtu wa bika aamantu wa ‘alayka tawakkaltu wa ‘ala rizqika aftartu” okay?
This longer version is also widespread online, but is built on the same weak report discussed above. Its meaning is good, yet the chain is not strong, so again, you may use it as a general dua, while knowing it is not from the strongest hadiths.

Very short answer you can memorize

If you just want one short authentic line for closing your fast:

Dhahaba al-zama’ wabtallati al-‘urooq wa thabata al-ajru in shā’ Allāh
“The thirst is gone, the veins are moistened, and the reward is confirmed, if Allah wills.”

You can add from your heart afterward, in any language, asking Allah to accept your fast and grant you goodness in this life and the next.

Information gathered from public forums or data available on the internet and portrayed here.