The Holy Prophet used to recite a prayer before breaking the fast. So it is Sunnah for the Muslim Ummah to recite this supplication before breaking the fast.
The prayer is
Arabic: اَللَّهُمَّ لَكَ صُمْتُ وَ عَلَى رِزْقِكَ اَفْطَرْتُ
Bengali pronunciation: ‘Allahumma laka sumtu wa ala rizqika aftartu’.
Meaning: ‘O Allah! For you I have fasted, breaking the fast by your sustenance’. (Abu Dawud, Chapter Sawm)
There is another dua mentioned in the hadith while breaking the fast or after breaking the fast.
On the authority of Abdullah Ibn Umar Radiyallahu Anhu, he said, The Messenger of Allah (PBUH) used to make this supplication while breaking the fast.
The prayer is
ذَهَبَ الذَّمَاءُ وَابْتَلَتِ الْعُرُوْقُ وَ ثَبَتَ الْأَجْرُ اِنْ شَاءَ الله
Pronunciation: ‘Zahabaz Jamau; Wabatalatil U’ruku; Wa Sabatal Azru Inshallah.
Meaning: (Through Iftar) the thirst is quenched, the veins are moistened and if Allah wills, the reward is fixed. (Abu Dawood, Mishkat)
