Sunan Abi Dawud
Sunan Abi Dawud 2358
Arabic hadith text
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا هُشَيْمٌ، عَنْ حُصَيْنٍ، عَنْ مُعَاذِ بْنِ زُهْرَةَ، أَنَّهُ بَلَغَهُ أَنَّ النَّبِيَّ صلى الله عليه وسلم كَانَ إِذَا أَفْطَرَ قَالَ " اللَّهُمَّ لَكَ صُمْتُ وَعَلَى رِزْقِكَ أَفْطَرْتُ " .
Translation
It reached Muadh ibn Zuhrah that when the Prophet broke his fast, he would say, "O Allah, for You I have fasted, and with Your provision I have broken my fast."