عَنْ سَلْمَانَ بْنِ عَامِرٍ الضَّبِّيِّ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ: ((إِذَا أَفْطَرَ أَحَدُكُمْ فَلْيُفْطِرْ عَلَى تَمْرٍ، فَإِنْ لَمْ يَجِدْ فَلْيُفْطِرْ عَلَى مَاءٍ فَإِنَّهُ طَهُورٌ (وَفِي لَفْظٍ:) فَإِنَّهُ لَهُ طَهُورٌ (وَفِي لَفْظٍ آخَرَ) فَإِنَّ الْمَاءَ طَهُورٌ))
Sayyiduna Salman bin Amir Dhabbi (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: When any of you breaks his fast, he should do so with dates; if dates are not available, then he should break his fast with water, for indeed it is purifying.