What dua do I say when breaking my fast?

Detailed answer

When you break your fast, begin with "Bismillah" (in the name of Allah), as before any meal. After the first sips, the best-known dua reported from the Prophet (peace be upon him) is:

Dhahaba al-zama'u, wabtallatil-'uruqu, wa thabatal-ajru in sha' Allah.
"The thirst has gone, the veins are moistened, and the reward is confirmed, if Allah wills." (Abu Dawud)

Because it speaks of thirst having gone, it is said after you have drunk, not before.

The other well-known dua

Many people also say: "Allahumma laka sumtu wa 'ala rizqika aftartu", "O Allah, for You I fasted and with Your provision I break my fast." It is also reported in Abu Dawud, but its chain is considered weaker by many hadith scholars. Its meaning is beautiful and there is no harm in saying it, but the first dua is the more established one.

A time when dua is answered

The moments around iftar are among the best times to ask Allah for anything. A hadith in Tirmidhi mentions the fasting person among those whose dua is not turned away. So before and after you break your fast, make dua in your own words and in any language: for yourself, your family, the sick and the whole Ummah.

In practice

1. Prepare dates and water a few minutes before sunset and use that time for dua.
2. At sunset, say "Bismillah" and break your fast. See why Muslims break the fast with dates.
3. Say "Dhahaba al-zama'u…" after drinking.
4. When you finish eating, thank Allah with "Alhamdulillah".

If you are someone's guest

When the Prophet broke his fast with people, he would pray for them: "Aftara 'indakumus-sa'imun, wa akala ta'amakumul-abrar, wa sallat 'alaykumul-mala'ikah", "May the fasting break their fast with you, the righteous eat your food, and the angels pray for you" (Abu Dawud). See also the reward for feeding a fasting person.

For more duas for the month, see the best duas in Ramadan.