Sayyiduna Anas bin Malik (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Whoever finds dates, let him break his fast with them, and whoever does not, let him break his fast with water, for it is indeed pure."
Al-Bukhari said, as Abu Isa (al-Tirmidhi) reported from him: The hadith of Sa'id bin Amir is a mistake (wahm) in which Sa'id erred; the correct one is the hadith of Asim from Hafsah bint Sirin.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصيام / 8130