The Prophet ﷺ said: When one of you is fasting, he should break his fast with dates; but if he cannot get any, then (he should break his fast) with water, for water is purifying. (Using translation from Abū Dāʾūd 2355)
"إذَا كانَ أحدُكُمْ صائمًا فْليُفطر علَى التَّمْرِ فإِن لم يجد التَّمْرَ فعلَى الماءِ؛ فإنَّ الماءَ طهورٌ".