Zaid b. Khalid reported God’s messenger as saying, ‘He who gives one who has been fasting something with which to break his fast, or who equips a fighter will have a reward equivalent to his.”
Baihaqi transmitted it in Shu'ab al-iman, and Muhyi as-sunna, who said it is sahih, in Sharh as-sunna.
Anas said that the Prophet used to break his fast before praying with some fresh dates, but if there were no fresh dates he had a few dry dates, and if there were no dry dates he took some mouthfuls* of water.
*Mirqat explains this as three mouthfuls, but 'three' does not occur in the text.
Tirmidhi and Abu Dawud transmitted it, Tirmidhi saying that this is a hasan gharib tradition.
