Sayyiduna Zayd bin Khalid al-Juhani (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "Whoever gives a fasting person food to break his fast, or equips a fighter, or provides for a pilgrim, will have a reward like theirs, without anything being reduced from their reward."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 5249