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 equips a fighter, or provides for a pilgrim, or looks after his family in his absence, or gives a fasting person food to break his fast, will have a reward equal to his, without anything being reduced from his reward."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 5252