The Prophet ﷺ used to break his fast with fresh dates before praying. If fresh dates were not available, he would break it with dried dates, and if dried dates were not available, he would take a few sips of water.
حدثنا عبد الرزاق حدثنا جعفر بن سليمان قال حدثني ثابت البناني
كان النبي ﷺ يفطر على رطبات قبل أن يصلي فإن لم يكن رطبات فتمرات فإن لم يكن تمرات حسا حسوات من ماء
Its isnad is sahih. The hadith was narrated by Abu Dawud, 2/306, no. 2356, in the Book of Fasting, chapter on What One Should Break the Fast With, and Tirmidhi narrated it likewise, 3/70, no. 696, and he said, "Hasan gharib." Munziri graded it hasan in al-Targheeb, 2/142, and Daraqutni graded it sahih, 2/185.