A female caller says: “Shaykh, we have a caller on the line asking: at the time of iftar, what is the prescribed supplication? And is the hadith ‘The thirst has gone, the veins are moistened, and the reward is established, if Allah wills’ authentically reported?”
He replied:
When a person breaks his fast, or at the time of breaking the fast, he supplicates to Allah, Glorified and Exalted, with whatever he wishes. He may say:
اللهم اغفر لي
Allahumma ighfir li
O Allah, forgive me.
اللهم ارحمني
Allahumma irhamni
O Allah, have mercy upon me.
اللهم تقبل مني
Allahumma taqabbal minni
O Allah, accept from me.
And similar duas that he wishes to make.
If he says:
اللهم لك صمت وعلى رزقك أفطرت فاغفر لي
Allahumma laka sumtu wa ʿala rizqika aftartu faghfir li
O Allah, for You I fasted and upon Your provision I have broken my fast, so forgive me.
Then these are good to recite after generally breaking your fast.
As for the dua:
ذهب الظمأ وابتلت العروق وثبت الأجر إن شاء الله
Dhahaba al dhhamāʾ wa ibtallati al ʿurūq wa thabata al ajru in shāʾ Allah
The thirst has gone, the veins are moistened, and the reward is established, if Allah wills.
This is only said in the fasting of days of intense heat, when there is real thirst and dryness of the veins. As for our times now, there is no thirst and no dryness of the veins.
If a person were to say in fasting such as ours, in days like these, “The thirst has gone,” while he did not experience thirst in his fast, then he would be lying. And if he were to say, “The veins are moistened,” while they were not dried during his fast, then he would be lying.
The hadith reported regarding this was in days of severe heat, in which thirst would occur and the veins would become dry.

